List of state highways in Iowa

Last updated

Iowa Primary 6.svg Iowa 16 1926.svg Iowa 136.svg Elongated circle 330.svg
Highway markers from different years
Highway names
Interstates Interstate nn (I-nn)
US Highways U.S. Highway nn (US nn)
State Iowa nn
System links

State highways in the U.S. state of Iowa are owned and maintained by the Iowa Department of Transportation.

State highways

NumberLength (mi) [1] [2] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
Iowa Primary 1.svg No. 1 236 [3] 380 Missouri state line near Lamoni Minnesota state line near Northwood 01920-01-01192001926-01-011926 Jefferson Highway through Iowa; replaced by US 65 and US 69
Circle sign 1.svg Iowa 1 119.268191.943 Iowa 2 south of Keosauqua US 151 south of Anamosa 01926-01-011926current
Iowa 2 1926.svg Iowa 2 233.80 [4] 376.26 US 6 near Lewis IL 2 at Muscatine 01920-01-01192001939-01-011939Renumbered Iowa 92 (renumbering approved 1938)
Circle sign 2.svg Iowa 2 251.376404.550 N-2 at Nebraska City, Neb. US 61 at Fort Madison 01941-01-011941currentFormerly Iowa 3
Iowa 3 1926.svg Iowa 3 267.07 [4] 429.81 N-2 at Nebraska City, Neb. IL 9 at Fort Madison 01920-01-01192001941-01-011941Renumbered Iowa 2
Circle sign 3.svg Iowa 3 323.102519.982 SD 50 near Westfield Northwest Arterial at Dubuque 01945-01-011945currentReplaced part of Iowa 5, all of Iowa 221, and part of Iowa 10
Circle sign 4.svg Iowa 4 29.70 [5] 47.80 US 59  / Iowa 141 at Denison Iowa 175 at Odebolt 01920-01-01192001968-12-311968Renumbered Iowa 39
Circle sign 4.svg Iowa 4 146.343235.516 Iowa 44 in Panora MN 4 near Estherville 01969-01-011969currentFormerly Iowa 17
Circle sign 5.svg Iowa 5 77.64 [5] 124.95 Iowa 3 near Aurelia US 169 at Fort Dodge 01920-01-01192001968-12-311968Renumbered Iowa 7
Circle sign 5.svg Iowa 5 103.540166.631 Route 5 south of Cincinnati I-35 near West Des Moines 01969-01-011969currentFormerly portion of Iowa 60
Iowa Primary 6.svg No. 6 369 [3] 594 Nebraska state line at Council Bluffs Illinois state line at Clinton 01920-01-01192001926-01-011926 Lincoln Highway through Iowa; replaced by US 30
Iowa 6 1926.svg Iowa 6 104167 Route 5 near Cincinnati US 32 in Des Moines 01926-01-01192601931-01-011931Formerly No. 17 and No. 59; became part of Iowa 60 when US 6 extended into Iowa
Iowa 7 1926.svg Iowa 7 140.69 [4] 226.42 US 6 at Council Bluffs City US 6 in Des Moines 01920-01-01192001939-01-011939Replaced by an extended Iowa 64
Iowa 7 1926.svg Iowa 7 0.47 [6] 0.76 Iowa 99 in Oakville Oakville01955-01-01195501957-01-011957Renumbered Iowa 407; spur route
Circle sign 7.svg Iowa 7 24.18 [5] 38.91 I-29 / US 77 in Sioux City Iowa 3 near Brunsville 01957-01-01195701968-12-311968Formerly Iowa 29; portion became Iowa 985
Circle sign 7.svg Iowa 7 73.661118.546 Iowa 3 near Aurelia US 169 at Fort Dodge 01969-01-011969currentFormerly Iowa 5
Iowa Primary 8.svg No. 8 283 [3] 455 No. 6 in Council Bluffs Illinois state line at Burlington 01920-01-01192001926-01-011926Replaced by US 34
Circle sign 8.svg Iowa 8 13.96122.468 US 63 in Traer US 218 near Garrison 01926-01-011926current
Circle sign 9.svg Iowa 9 295.088474.898 SD 42 near Larchwood WIS 82 at Lansing 01920-01-011920current
Elongated circle 10.svg Iowa 10 104.512168.196 SD 46 near Hawarden Iowa 4 at Havelock 01920-01-011920current
Iowa 11 1926.svg Iowa 11 96.60 [4] 155.46 US 151  / Iowa 64 in Cedar Rapids US 52  / Iowa 24 in Calmar 01920-01-01192001941-01-011941Replaced by Iowa 150, which was proposed to become part of US 150
Elongated circle 12.svg Iowa 12 46.27474.471 US 20  / US 75 at Sioux City Iowa 10 in Hawarden 01920-01-011920currentSigned as US 20 Bus through Sioux City
Elongated circle 13.svg Iowa 13 85.235137.172 US 30  / US 151 near Bertram US 52 near Froelich 01920-01-011920current
Elongated circle 14.svg Iowa 14 187.838302.296 Iowa 2 at Corydon US 18  / US 218 Bus in Charles City 01920-01-011920current
Iowa 15 1926.svg Iowa 15 111179 US 30 in Ames Minnesota state line near Lake Mills 01920-01-01192001935-01-011935Replaced by US 69
Elongated circle 15.svg Iowa 15 14.92 [5] 24.01 Iowa 137 at Eddyville US 63 in Ottumwa 01937-01-01193701968-12-311968Renumbered Iowa 23
Elongated circle 15.svg Iowa 15 4.6557.491 Route 15 south of Milton Iowa 2 at Milton01969-01-01196902003-01-012003Formerly Iowa 23
Elongated circle 15.svg Iowa 15 63.578102.319 Iowa 3 near Pocahontas MN 15 near Armstrong 01969-01-011969currentFormerly Iowa 44
Iowa 16 1926.svg Iowa 16 239385 Missouri state line near Redding Minnesota state line near Ledyard 01920-01-01192001930-01-011930Replaced by US 169
Elongated circle 16.svg Iowa 16 65.488105.393 US 34 near Agency US 61 at Wever 01930-01-011930current
Elongated circle 17.svg Iowa 17 147.48 [5] 237.35 Iowa 64 in Panora MN 4 near Estherville 01920-01-01192001968-12-311968Renumbered Iowa 4
Elongated circle 17.svg Iowa 17 102.789165.423 Iowa 141 at Granger US 18 near Wesley 01969-01-011969currentFormerly portion of Iowa 60
Iowa Primary 18.svg No. 18 148238 Missouri state line at Braddyville No. 23 at Sac City 01920-01-01192001926-01-011926Replaced by US 71
Iowa Primary 19.svg No. 19 302486 South Dakota state line near Inwood Wisconsin state line at Lansing 01920-01-01192001926-01-011926East end truncated to US 75 for a month in 1926; replaced by US 18
Iowa 19 1926.svg Iowa 19 2.44 [6] 3.93 Backbone State Park Iowa 3  / Iowa 13 near Strawberry Point 01927-01-01192701957-01-011957Renumbered Iowa 410
Iowa Primary 20.svg No. 20 324 [3] 521 Illinois state line at Keokuk Minnesota state line near Burr Oak 01920-01-01192001926-01-011926Replaced by US 61 and US 55
Iowa 21 1926.svg Iowa 21 115185 Minnesota state line near Allendorf Iowa 141 near Denison 01920-01-01192001934-01-011934Replaced by Iowa 73 (proposed US 73)
Elongated circle 21.svg Iowa 21 97.152156.351 Iowa 149 near Hedrick US 20  / Iowa 27 at Waterloo 01934-01-011934currentFormerly ended at Iowa 92; extended south in 1980
Iowa Primary 22.svg No. 22 34 [3] 55 No. 5 at Le Mars Minnesota state line north of Rock Rapids 01920-01-01192001926-01-011926Replaced by US 75
Elongated circle 22.svg Iowa 22 97.905157.563 Iowa 21 near Thornburg US 61 at Davenport 01926-01-011926current
Iowa Primary 23.svg No. 23 130 [3] 210 South Dakota state line at Sioux City No. 16 at Fort Dodge 01920-01-01192001926-01-011926Replaced by US 20
Elongated circle 23.svg Iowa 23 4.78 [5] 7.69 Route 15 south of Milton Iowa 2 at Milton01926-01-01192601968-12-311968Formerly part of No. 11; renumbered Iowa 15
Elongated circle 23.svg Iowa 23 14.31623.039 US 63 in Ottumwa Iowa 137 at Eddyville 01969-01-01196901997-01-011997Formerly Iowa 15; partially replaced by US 63
Elongated circle 23.svg Iowa 23 16.02225.785 Iowa 92 at Oskaloosa Iowa 149 near Fremont 01997-01-011997currentFormerly US 63
Iowa 24 1926.svg Iowa 24 127204 US 71 near Lyman US 63 in Oskaloosa 01920-01-01192001927-01-011927Replaced by an extended Iowa 2
Elongated circle 24.svg Iowa 24 27.54644.331 US 18  / US 63 in New Hampton US 52  / Iowa 150 in Calmar 01928-01-011928current
Iowa Primary 25.svg No. 25 2032 No. 15  / No. 24 at Winterset No. 2  / No. 17 at Adel 01920-01-01192001926-01-011926Replaced by relocated Iowa 16
Elongated circle 25.svg Iowa 25 103.419166.437 Iowa 2 near Benton US 30 near Scranton 01926-01-011926currentContinued south to the Missouri state line until 1978, and to Blockton until 1980
Iowa 26 1926.svg Iowa 26 1016 US 18 near Rock Valley US 18 near Rock Valley01920-01-01192001930-01-011930Replaced by relocated US 18 (portions were cancelled in exchange for relocated US 18)
Elongated circle 26.svg Iowa 26 9.52 [5] 15.32 US 18 in Inwood Iowa 9 near Larchwood 01930-01-01193001968-12-311968Renumbered Iowa 182
Elongated circle 26.svg Iowa 26 11.37018.298 Iowa 9 in Lansing MN 26 at New Albin 01969-01-011969currentFormerly Iowa 182
Iowa 27 1926.svg Iowa 27 21.234.1 Iowa 12 in Akron US 75 in Le Mars 01920-01-01192001929-01-011929Replaced by an extended Iowa 5
Iowa 27 1926.svg Iowa 27 1118 Nebraska border US 30  / US 75 in Missouri Valley 01929-01-01192901930-01-011930Renumbered Iowa 130
Elongated circle 27.svg Iowa 27 6.86 [7] 11.04 Alvord US 75 near Rock Rapids 01930-01-01193001980-01-011980Spur route; originally from US 75 to George
Avenue of the Saints banner.svg
Elongated circle 27.svg Iowa 27
281.689453.335 Route 27 near Wayland, Mo. I-35 at the Minnesota state line02001-01-012001current Avenue of the Saints
Iowa Primary 28.svg No. 28 72 [3] 116 No. 6  / No. 11 in Cedar Rapids No. 5  / No. 20 in Dubuque 01920-01-01192001926-01-011926Replaced by US 161
Elongated circle 28.svg Iowa 28 21.61334.783 Iowa 92 at Martensdale I-35  / I-80 at Johnston 01926-01-011926currentPreviously ended at Iowa 5; extended to US 6 in 1980, and to I-80 in 1991
Iowa 29 1926.svg Iowa 29 22.06 [6] 35.50 I-29 / US 77 in Sioux City Iowa 3 near Brunsville 01920-01-01192001957-01-011957Renumbered Iowa 7 when I-29 was designated
Iowa Primary 30.svg No. 30 2540 No. 23 at Moville No. 5 at Remsen 01920-01-01192001926-01-011926Renumbered Iowa 140
Elongated circle 31.svg Iowa 31 38.50461.966 US 59 near Quimby Iowa 141 near Smithland 01920-01-011920current
Iowa Primary 32.svg No. 32 58.0 No. 5 near Cleghorn Cleghorn01920-01-01192001926-01-011926Renumbered Iowa 145
Elongated circle 32.svg Iowa 32 7.6812.36 Iowa 9 near Spirit Lake US 71 near Milford 01934-01-01193401981-01-011981extended and renumbered Iowa 86 to match Minnesota
Elongated circle 32.svg Iowa 32 5.101 [7] 8.209 US 20 at Dubuque US 52  / Iowa 3 at Sageville 01995-01-01199502021-01-012021Turned over to Dubuque after the US 52 Southwest Arterial opened
Iowa 33 1926.svg Iowa 33 3.45.5 Meriden Iowa 5 01920-01-01192001930-01-011930Became a county road (now L51) due to rerouting of Iowa 5 between Iowa 143 and Cherokee
Elongated circle 33.svg Iowa 33 55.95 [5] 90.04 US 75 at Le Mars MN 60 at Bigelow, Minn. 01930-01-01193001968-12-311968Renumbered Iowa 60
Iowa Primary 34.svg No. 34 68109 No. 4 at Denison No. 12 at Sioux City 01920-01-01192001926-01-011926Renumbered Iowa 141
Iowa 35 1926.svg Iowa 35 49.00 [8] 78.86 Iowa 37 near Turin US 71 near Odebolt 01920-01-01192001948-01-011948Replaced by an extended Iowa 175
Iowa 35 1926.svg Iowa 35 0.23 [6] 0.37 US 18 near Garner Garner 01954-01-01195401957-01-011957Spur route; renumbered Iowa 409 when I-35 was designated
Elongated circle 36.svg Iowa 36 2.9834.801 Wall Lake US 71 near Wall Lake01920-01-01192002003-01-012003 Spur route; now County Roads M64 (north-south section) and D59 (east-west section)
Elongated circle 37.svg Iowa 37 40.32164.890 Iowa 175 near Turin US 59 near Earling 01920-01-011920currentContinued east to Irwin until 1982
Elongated circle 38.svg Iowa 38 98.941159.230 US 61 Bus  / Iowa 92 in Muscatine Iowa 3 near Edgewood 01920-01-011920current
Elongated circle 39.svg Iowa 39 11.68 [5] 18.80 US 30 near Logan Iowa 64  / Iowa 191 at Portsmouth 01920-01-01192001968-12-311968Renumbered Iowa 44
Elongated circle 39.svg Iowa 39 24.32139.141 US 59 at Denison Iowa 175 at Odebolt 01969-01-011969currentFormerly Iowa 4
Iowa Primary 40.svg No. 40 262 [3] 422 No. 20 in Keokuk Minnesota state line near Mona 01920-01-01192001926-01-011926Replaced by US 161, US 20, US 30, and US 218; the entire route is now US 218
Elongated circle 40.svg Iowa 40 3.5245.671 Allerton Iowa 2 near Corydon 01926-01-01192602003-01-012003Spur route; now County Road S26
Elongated circle 41.svg Iowa 41 1.8272.940 Malvern US 34 near Malvern01920-01-01192002003-01-012003Spur route; now County Road L63
Elongated circle 42.svg Iowa 42 4.186.73 US 275  / Iowa 2 near Riverton Riverton01920-01-01192001980-12-011980Spur route; now County Road J46
Elongated circle 43.svg Iowa 43 1.752.82 Ringsted Iowa 15 near Ringsted01920-01-01192001980-01-011980Spur route; now a local road and County Road A34
Elongated circle 44.svg Iowa 44 63.95 [5] 102.92 Iowa 3 near Pocahontas MN 15 near Armstrong 01920-01-01192001968-12-311968Renumbered Iowa 15
Elongated circle 44.svg Iowa 44 104.524168.215 US 30 near Logan Iowa 141 at Grimes 01969-01-011969currentFormerly Iowa 39 and Iowa 64
Elongated circle 45.svg Iowa 45 1.3242.131 Manilla Iowa 141 near Manilla01920-01-01192002003-01-012003Spur route; now County Road M65
Iowa 46 1926.svg Iowa 46 64.84 [4] 104.35 US 59 near Denison Iowa 17 (now Iowa 144) in Perry 01920-01-01192001941-01-011941Originally a double spur route; replaced by an extended Iowa 141
Iowa 46 1926.svg Iowa 46 4.346.98 Iowa 90 in Des Moines Iowa 28 (now Army Post Road) in Des Moines01942-01-01194201950-01-011950Now 9th Street, Mulberry Street, and 7th Street
Elongated circle 46.svg Iowa 46 6.57 [9] 10.57 Iowa 5 near Avon Iowa 163 in Des Moines 01953-01-01195301998-01-011998Now city streets
Iowa 47 1926.svg Iowa 47 1321 Iowa 287 in Farnhamville US 169 near Harcourt 01920-01-01192001940-01-011940Spur route; replaced by an extended Iowa 175
Elongated circle 47.svg Iowa 47 0.821.32 Iowa 14 near Allison Allison 01941-01-01194101980-01-011980Spur route; now 7th Street
Elongated circle 48.svg Iowa 48 47.91977.118 US 59 at Shenandoah US 6 near Lewis 01920-01-011920current
Elongated circle 49.svg Iowa 49 27.22843.819 Iowa 2 in Bedford US 34 in Adams County 01920-01-01192002003-01-012003Was originally a spur route from US 34 to Lenox; now County Roads N64, J23, N52, J35, and N44 (in order from US 34 to Iowa 2)
Elongated circle 50.svg Iowa 50 7.13511.483 US 169 near Lehigh Lehigh01920-01-01192002003-01-012003Spur route; now County Road D43
Elongated circle 51.svg Iowa 51 11.00717.714 US 18  / US 52 at Postville Iowa 9 near Waukon 01920-01-011920current
Iowa 52 1926.svg Iowa 52 7 [10] 11 Elma US 63 east of Elma01920-01-01192001934-01-011934Spur route; renumbered Iowa 272 when US 52 extended into Iowa
Iowa Primary 53.svg No. 53 1321 No. 14 near Rockford No. 19 near Nora Springs 01920-01-01192001926-01-011926Renumbered Iowa 147 to avoid conflict with US 53 (which became US 55 in the revised numbering plan; see below)
Iowa 53 1926.svg Iowa 53 3.04 [8] 4.89 Iowa 3 near Clarksville Clarksville01926-01-01192601949-01-011949Formerly No. 55; became part of Iowa 188
Elongated circle 53.svg Iowa 53 1.43 [11] 2.30 Gowrie Iowa 175 near Gowrie01953-01-01195301969-01-011969Spur route; now local roads (Market and 4th Streets)
Elongated circle 54.svg Iowa 54 2.994.81 Marble Rock Iowa 14 in Floyd County 01920-01-01192001980-01-011980Spur route; now County Road B60
Iowa Primary 55.svg No. 55 34.8 No. 10 near Clarksville Clarksville01920-01-01192001926-01-011926Renumbered Iowa 53 to avoid conflict with US 55
Elongated circle 55.svg Iowa 55 4.5067.252 Seymour Iowa 2 near Promise City 01934-01-01193402003-01-012003Spur route; now County Road S60
Elongated circle 56.svg Iowa 56 24.43239.319 Iowa 150 at West Union Iowa 13 at Elkader 01920-01-011920current
Elongated circle 57.svg Iowa 57 18.41 [12] 29.63 Iowa 14 near Fern Iowa 58 in Cedar Falls 01920-01-01192001986-01-011986Section from Iowa 58 to US 20 was deleted in 1980; removed after US 20 freeway was constructed
Elongated circle 57.svg Iowa 57 43.76570.433 US 65 near Iowa Falls US 218  / Iowa 27  / Iowa 58 at Cedar Falls 01986-01-011986currentFormerly US 20
Elongated circle 58.svg Iowa 58 12.03019.360 US 63 at Hudson US 218  / Iowa 27  / Iowa 57 at Cedar Falls 01920-01-011920current
Iowa 59 1926.svg Iowa 59 197 [10] 317 Minnesota state line Iowa 5 at Albia 01920-01-01192001934-01-011934Replaced by US 63 and Iowa 137
Elongated circle 60.svg Iowa 60 233.24 [5] 375.36 Route 5 south of Cincinnati US 18 near Wesley 01920-01-01192001968-12-311968Renumbered Iowa 5 and Iowa 17
Elongated circle 60.svg Iowa 60 58.77194.583 US 75 at Le Mars MN 60 at Bigelow, Minn. 01969-01-011969currentFormerly Iowa 33
Iowa Primary 61.svg No. 61 73117 No. 28 at Anamosa No. 6 in Lyons 01920-01-01192001926-01-011926Renumbered Iowa 117 and Iowa 136
Elongated circle 62.svg Iowa 62 19.63331.596 Iowa 64 at Maquoketa US 52 in Bellevue 01920-01-011920current
Iowa Primary 63.svg No. 63 2439 No. 59 in New Sharon No. 7 in Grinnell 01920-01-01192001926-01-011926Renumbered Iowa 146
Iowa 64 1926.svg Iowa 64 3251 Iowa 163 at Prairie City US 30 in Colo 01920-01-01192001936-01-011936Renumbered Iowa 117
Elongated circle 64.svg Iowa 64 64.355103.569 US 151 at Anamosa US 52  / IL 64 at Savanna, Ill. 01939-06-201939currentFormerly Iowa 117
Iowa Primary 65.svg No. 65 2134 No. 8 at Lucas No. 1 south of Indianola 01920-01-01192001926-01-011926Renumbered Iowa 137
Iowa 66 1926.svg Iowa 66 711 Humeston Iowa 3 near Humeston01920-01-01192001930-01-011930Spur route; replaced by an extended Iowa 137
Elongated circle 66.svg Iowa 66 7.01111.283 Iowa 2 near Diagonal Diagonal01930-01-01193002003-01-012003Spur route; now County Road P33
Iowa 67 1926.svg Iowa 67 6 [10] 9.7 Seymour Iowa 3 near Promise City 01920-01-01192001934-01-011934Spur route; renumbered Iowa 55 when US 67 extended into Iowa
Elongated circle 68.svg Iowa 68 1.9333.111 Melrose US 34 near Melrose01920-01-01192002003-01-012003Spur route; now County Road S70
Iowa Primary 69.svg No. 69 34.8 No. 3 near Mystic Mystic01920-01-01192001926-01-011926Renumbered Iowa 138
Elongated circle 70.svg Iowa 70 8.20 [5] 13.20 Macksburg US 169 near Macksburg01920-01-01192001966-01-011966Spur route; now County Road G41
Elongated circle 70.svg Iowa 70 23.95438.550 Iowa 92 at Columbus Junction US 6 in West Liberty 01969-01-011969currentFormerly Iowa 76
Iowa Primary 71.svg No. 71 34.8 Moulton No. 3 near Moulton01920-01-01192001926-01-011926Renumbered Iowa 142
Elongated circle 72.svg Iowa 72 10.89 [12] 17.53 US 69 west of Dows I-35 east of Dows 01920-01-01192001986-01-011986Originally a spur route; extended east from Dows to I-35 in 1980
Iowa 73 1926.svg Iowa 73 35.957.8 Iowa 8 in Dysart US 6 in Marengo 01920-01-01192001934-01-011934Renumbered Iowa 212 to avoid conflict with new Iowa 73, which was proposed to become part of US 73
Iowa 73 1926.svg Iowa 73 225362 Missouri state line south of Shenandoah Minnesota state line near Allendorf 01934-01-01193401935-01-011935Was proposed to become part of US 73; replaced by US 59
Elongated circle 73.svg Iowa 73 14.97 [13] 24.09 Iowa 141 in Coon Rapids Iowa 44 01936-01-01193601972-01-011972Became County Road N46
Iowa 74 1926.svg Iowa 74 38.27 [4] 61.59 Iowa 38 in Tipton US 61 in Davenport 01920-01-01192001941-01-011941Replaced by Iowa 150, which was proposed to become part of US 150
Elongated circle 74.svg Iowa 74 11.16817.973 US 151 in Cedar Rapids Palo 01943-01-01194301966-01-011966Spur route; renumbred Iowa 94 when I-74 was designated
Iowa Primary 75.svg No. 75 23.2 No. 5 near Marcus Marcus01920-01-01192001926-01-011926Renumbered Iowa 143
Elongated circle 76.svg Iowa 76 25.98 [5] 41.81 Columbus City US 6 in West Liberty 01920-01-01192001968-12-311968Renumbered Iowa 70
Elongated circle 76.svg Iowa 76 48.91178.715 US 18 near McGregor MN 76 near Eitzen, Minn. 01969-01-011969currentFormerly portion of Iowa 13
Elongated circle 77.svg Iowa 77 2.6854.321 Iowa 92 near Keota Keota01920-01-01192002003-01-012003Spur route, continued south to Iowa 78 until 1980; now County Road W15 and a local road
Elongated circle 78.svg Iowa 78 58.42994.032 Iowa 149 near Martinsburg US 61 near Morning Sun 01920-01-011920current
Elongated circle 79.svg Iowa 79 1.842.96 Iowa 2 near Bonaparte Bonaparte01920-01-01192001980-01-011980Spur route; now County Road W40
Elongated circle 79.svg Iowa 79 5.6379.072 Geode State Park US 34 in Middletown 01980-01-01198002003-01-012003Park access road; was a county road before commissioning and returned to a county road; initially known as County Road 79 until 2005 when it became J20
Iowa 80 1926.svg Iowa 80 4.00 [6] 6.44 US 34 near West Burlington US 61 in Burlington 01920-01-01192001957-01-011957Spur route; renumbered Iowa 406 when I-80 was designated
Elongated circle 81.svg Iowa 81 9.20 [5] 14.81 Iowa 92 near West Chester Iowa 22 at Wellman 01920-01-01192001968-12-311968Renumbered Iowa 114
Elongated circle 81.svg Iowa 81 2.2153.565 Route 81 near Farmington Iowa 2 near Farmington01969-01-011969currentFormerly Iowa 114
Elongated circle 82.svg Iowa 82 3.7736.072 Blairstown US 30 near Blairstown01920-01-01192002003-01-012003Spur route; now County Road V66
Elongated circle 83.svg Iowa 83 34.19155.025 US 59 in Avoca Iowa 148 in Anita 01920-01-011920currentContinued west to Neola until 2003
Iowa 84 1926.svg Iowa 84 6.09 [8] 9.80 College Springs US 71 near Shambaugh 01920-01-01192001943-01-011943Spur route; replaced by an extended Iowa 333
Elongated circle 84.svg Iowa 84 2.133.43 Eastern Iowa Airport I-380 near Cedar Rapids 01943-01-01194301980-01-011980Airport access road; now County Road E70
Elongated circle 85.svg Iowa 85 8.40813.531 Montezuma city limits Iowa 21 near Deep River 01920-01-011920current
Iowa 86 1926.svg Iowa 86 46.4 US 34 in Council Bluffs Lake Manawa01920-01-01192001928-01-011928Spur route; restored in 1931 as Iowa 241, later Iowa 192
Iowa 86 1926.svg Iowa 86 3.76.0 US 61 (now Sunnyside Avenue) in Burlington US 61 (now Summer Street) in Burlington01929-01-01192901945-01-011945Now Roosevelt Avenue and West Avenue
Elongated circle 86.svg Iowa 86 0.470.76 Fertile Iowa 9 at Fertile01945-01-01194501980-01-011980Spur route
Elongated circle 86.svg Iowa 86 12.51920.147 US 71 near Milford MN 86 near Spirit Lake 01980-01-011980current
Elongated circle 87.svg Iowa 87 4.06 [14] 6.53 US 69 west of Elkhart Elkhart 01920-01-01192001983-01-011983Spur route
Iowa 88 1926.svg Iowa 88 37.65 [4] 60.59 US 6 in Altoona US 30 near Marshalltown 01920-01-01192001939-01-011939Originally a spur route; replaced by an extended Iowa 64
Elongated circle 88.svg Iowa 88 8.0112.89 US 61  / Iowa 2 in Fort Madison Iowa 16 in Denmark 01940-01-01194001980-01-011980Originally a spur route
Iowa 89 1926.svg Iowa 89 25.87 [4] 41.63 US 169 near Bouton Iowa 64 in Johnston 01920-01-01192001941-01-011941Originally a spur route; replaced by an extended Iowa 141
Elongated circle 89.svg Iowa 89 7.6912.38 Iowa 141 near Woodward Iowa 17 in Madrid 01946-01-01194601980-11-011980Replaced by an extended Iowa 210
Iowa Primary 90.svg No. 90 4064 No. 17 near Bouton No. 16 at Harcourt 01920-01-01192001926-01-011926Replaced by relocated Iowa 16 (now US 169)
Iowa 90 1926.svg Iowa 90 1626 Iowa 14 at Grundy Center Iowa 59 near Voorhies 01926-01-01192601932-01-011932Formerly No. 58; became part of Iowa 58 again
Elongated circle 90.svg Iowa 90 16.32 [15] 26.26 I-80 in Dallas County I-35 in Des Moines 01932-01-01193201981-01-011981Now County Road F90; section in Polk County maintained as unsigned Iowa 934 until 1989
Iowa 91 1926.svg Iowa 91 2.69 [4] 4.33 US 169 near Harcourt Dayton 01920-01-01192001940-01-011940Spur route; replaced by an extended Iowa 175
Elongated circle 91.svg Iowa 91 4.186.73 Ledyard US 169 near Ledyard01940-01-01194001980-05-011980Spur route; now County Road A30
Elongated circle 91.svg Iowa 91 4.6437.472 Iowa 9 in Lyon County MN 91 at the Minnesota state line01980-01-01198002003-01-012003Now County Road L14 (was K64 before 1980)
Iowa 92 1926.svg Iowa 92 1.33 [4] 2.14 Iowa 101 near Urbana Urbana01920-01-01192001939-01-011939Spur route; became Iowa 363
Elongated circle 92.svg Iowa 92 274.231441.332 US 275  / N-92 in Council Bluffs IL 92 at Muscatine 01939-01-011939currentFormerly Iowa 2
Elongated circle 93.svg Iowa 93 29.53447.530 US 63 near Tripoli Iowa 150 in Fayette 01920-01-011920current
Iowa 94 1926.svg Iowa 94 13.12 [6] 21.11 US 151 in Marion US 30 in Mount Vernon 01920-01-01192001958-01-011958Replaced by relocated Iowa 150
Elongated circle 94.svg Iowa 94 11.16817.973 US 151 Business in Cedar Rapids Palo 01966-01-01196602003-01-012003Spur route; now County Road W36 in Linn County and city streets in Cedar Rapids
Iowa 95 1926.svg Iowa 95 69.7 US 169 near Bouton Woodward 01920-01-01192001932-01-011932Spur route; replaced by an extended Iowa 89
Elongated circle 95.svg Iowa 95 3.705.95 Carbon Iowa 148 north of Corning 01932-01-01193201983-01-011983Spur route; section inside Carbon eliminated 1980; rest redesignated as unsigned Iowa 951
Elongated circle 96.svg Iowa 96 16.63526.771 Iowa 14 near Gladbrook US 63 near Gladbrook01920-01-011920current
Elongated circle 97.svg Iowa 97 1.5322.466 Russell US 34 near Russell01920-01-01192002003-01-012003Spur route; much of route now County Road S56 with the last two blocks now Shaw Street
Iowa 98 1926.svg Iowa 98 11.10 [8] 17.86 US 34 near Agency Selma 01920-01-01192001944-01-011944Spur route; replaced by an extended Iowa 16, and Iowa 98 was reassigned to the old route of Iowa 16
Elongated circle 98.svg Iowa 98 1.8142.919 Leando Iowa 16 near Douds 01920-01-01192002017-01-012017Spur route; originally began at Iowa 8 (later US 34) east of Agency, but was shortened to Iowa 16 near Douds in 1942 (this section became Iowa 16); now County Road V64
Iowa 99 1926.svg Iowa 99 3353 US 30 near Camanche US 61 in Davenport 01920-01-01192001931-01-011931Replaced by US 55 (later US 67)
Elongated circle 99.svg Iowa 99 33.23253.482 US 34 in Burlington US 61 in Wapello 01931-01-01193102003-01-012003Now County Road X99; was County Road 99 until 2005
Iowa 100 1926.svg Iowa 100 44.42 [6] 71.49 US 275  / Iowa 375 in Council Bluffs US 71 in Lyman 01920-01-01192001958-01-011958Originally a spur route from Iowa 2/Iowa 24 (now US 6) to Griswold, this became part of Iowa 48 in 1923; east-west route designated 1921 when Iowa 24 was decommissioned through Lewis, replaced by relocated Iowa 92
Iowa 100 1926.svg Iowa 100 6.12 [16] 9.85 US 6 near Lewis US 71 near Atlantic 01958-01-01195801958-01-011958Former section of Iowa 92; renumbered Iowa 414 due to confusion with old Iowa 100
Elongated circle 100.svg Iowa 100 16.14025.975 US 30  / US 218 in Cedar Rapids US 151  / Iowa 13 near Marion 01984-01-011984currentFormer portion of Iowa 150
Circle sign 101.svg Iowa 101 15.5625.04 US 218 in Vinton Iowa 150 north of Urbana 01920-01-01192001984-01-011984Replaced by a relocated Iowa 150
Circle sign 102 (small).svg Iowa 102 1.822.93 Hawkeye US 18 near Hawkeye01920-01-01192001980-01-011980Now County Road W14
Iowa 102 0.5010.806 New Sharon city limits US 63  / Iowa 146 in New Sharon01980-01-011980currentUnsigned highway; formerly extended to Pella (this is now County Road G5T)
Circle sign 103.svg Iowa 103 15.64925.185 US 218 near Donnellson US 61  / Iowa 2 in Fort Madison 01920-01-01192002003-01-012003Now County Road J40
Iowa Primary 104.svg No. 104 2032 No. 8 near Council Bluffs No. 4 in Macedonia 01920-01-01192001926-01-011926First highway to be decommissioned in Iowa; became a county road (now numbered G66)
Circle sign 104 (small).svg Iowa 104 1.532.46 Woodburn US 34 near Woodburn01927-01-01192701980-01-011980Spur route; now County Road R69; segment in Woodburn maintained as unsigned Iowa 942 until 2003
Circle sign 105.svg Iowa 105 34.23 [12] 55.09 US 69 in Lake Mills US 218 in St. Ansgar 01920-01-01192001992-01-011992Section from US 69 to Winnebago–Worth county line last shows on 1994 map, so was signed until 1994; now County Road 105
Circle sign 106 (small).svg Iowa 106 8.9814.45 Iowa 107 in Clear Lake US 65 in Mason City 01920-01-01192001980-01-011980Now local roads and County Road B35
Circle sign 107.svg Iowa 107 27.57944.384 Iowa 3 near Alexander CR B35 near Clear Lake 01920-01-01192002011-01-012011All but parts in Meservey and Thornton removed in 2003; now County Roads S25, B65 and S14
Circle sign 108 (small).svg Iowa 108 1.181.90 Delta Iowa 92 near Delta01923-01-01192301980-01-011980Spur route; now County Road V33 and Iowa 21
Circle sign 109.svg Iowa 109 1.2682.041 Oxford US 6 near Oxford01923-01-01192302003-01-012003Spur route; now County Road W38
Iowa 110 1926.svg Iowa 110 0.71.1 Larrabee Iowa 73 in Larrabee 01923-01-01192301934-01-011934Spur route; decommissioned when Iowa 73 (proposed US 73, now US 59) was relocated to go through Larrabee; now a county road (455th Street)
Elongated circle 110.svg Iowa 110 14.78923.801 US 20 at Schaller Iowa 7 at Storm Lake 01934-01-011934current
Circle sign 111.svg Iowa 111 26.72 [17] 43.00 Kanawha Woden 01923-01-01192301990-01-011990Double spur route with US 18; originally a spur route; now County Road R35
Iowa 112 1926.svg Iowa 112 34.8 Iowa 13 Edgewood 01923-01-01192301930-01-011930Spur route; replaced by an extended Iowa 10 (this section now Iowa 3)
Circle sign 112 (small).svg Iowa 112 5.198.35 Volga Iowa 13 near Osborne 01931-01-01193101980-01-011980Spur route; now County Road C24
Iowa 113 1926.svg Iowa 113 34.09 [4] 54.86 Iowa 10 near Edgewood US 151 in Monticello 01924-01-01192401938-01-011938Replaced by an extended Iowa 38
Circle sign 113.svg Iowa 113 1.1871.910 Iowa 64 near Spragueville Spragueville01938-01-01193802003-01-012003Spur route; now County Road Z20
Circle sign 114 (small).svg Iowa 114 2.22 [5] 3.57 Route 81 near Farmington Iowa 2 near Farmington01923-01-01192301968-12-311968Swapped with Iowa 81
Circle sign 114.svg Iowa 114 9.2014.81 Iowa 92 near West Chester Iowa 22 at Wellman 01969-01-01196901981-01-011981Formerly Iowa 81; now County Road W38
Circle sign 115 (small).svg Iowa 115 1.34 [11] 2.16 US 69 Story City 01923-01-01192301969-01-011969Spur route; now County Road E15
Circle sign 115.svg Iowa 115 1.2371.991 US 34 near Stanton Viking Lake State Park 01980-01-01198002003-01-012003Park access road; now County Roads M65 and H43
Circle sign 116 (small).svg Iowa 116 1.57 [18] 2.53 US 20 near Manchester Manchester Fish Hatchery01923-01-01192301976-01-011976Fish hatchery access road; renumbered Iowa 938 because US 20 was rerouted
Iowa 116 2.7764.468 Iowa 3 in Waverly US 218 near Waverly01998-01-011998currentSection of US 218 Business in Waverly; signed as US 218 Business instead of Iowa 118
Iowa 117 1926.svg Iowa 117 63101 US 161 at Anamosa US 52  / IL 64 at Savanna, Ill. 01923-01-01192301936-01-011936Swapped with Iowa 64
Elongated circle 117.svg Iowa 117 18.56229.873 Iowa 163 at Prairie City US 65  / Iowa 330 near Mingo 01939-06-201939currentFormerly Iowa 64
Circle sign 118.svg Iowa 118 4.06 [17] 6.53 Steamboat Rock Iowa 175 near Eldora 01923-01-01192301989-01-011989Spur route; now County Road S56 and a local road (Market Street)
Circle sign 119 (small).svg Iowa 119 1.041.67 Dorchester Iowa 76 near Dorchester01923-01-01192301980-01-011980Spur route; now County Road A16
Circle sign 120 (small).svg Iowa 120 0.801.29 Stanton US 34 near Stanton01924-01-01192401980-01-011980Spur route; now County Road M63
Circle sign 121 (small).svg Iowa 121 0.51 [19] 0.82 Dolliver Memorial State Park Iowa 50 near Lehigh 01924-01-01192401964-01-011964Park access road; became a county road (now numbered D64)
Iowa 122 1926.svg Iowa 122 5.47 [16] 8.80 Iowa 150 in Davenport US 61 in Davenport01924-01-01192401960-01-011960Now Pine Street, Cheyenne Avenue, Division Street, Locust Street, and Marquette Street
Circle sign 122 (small).svg Iowa 122 3.044.89 Iowa 3 near Clarksville Clarksville01964-01-01196401965-01-011965Former section of Iowa 188; became part of Iowa 188 again
Elongated circle 122.svg Iowa 122 12.26419.737 I-35  / US 18 at Clear Lake Mason City city limits01999-01-011999current
Iowa 123 1926.svg Iowa 123 10.5116.91 I-35 in Des Moines Iowa 90 in Des Moines01924-01-01192401959-01-011959Partially replaced by Iowa 60; rest now Fleur Drive
Circle sign 123 (small).svg Iowa 123 0.450.72 US 34 near Rome Rome01969-01-01196901980-01-011980Spur route; inside Rome stayed in the highway system until 1981
Circle sign 124.svg Iowa 124 2.5674.131 Iowa 4 in Calhoun County Twin Lakes State Park 01924-01-01192402003-01-012003Park access road; now County Roads D26 and N57
Circle sign 125.svg Iowa 125 3.265.25 Salem US 218 east of Salem01924-01-01192401981-01-011981Spur route; section inside Salem deleted in 1980; now County Road J20
Circle sign 126 (small).svg Iowa 126 1.282.06 US 6 near Mitchellville Mitchellville01924-01-01192401980-01-011980Spur route; now unsigned County Road S27
Elongated circle 127.svg Iowa 127 15.98525.725 I-29 near Mondamin US 30 in Logan 01924-01-011924current
Elongated circle 128.svg Iowa 128 6.98211.236 Iowa 13 near Elkader US 52 near Garnavillo 01924-01-011924current
Circle sign 129 (small).svg Iowa 129 0.45 [11] 0.72 US 34 near Rome Rome01924-01-01192401969-01-011969Spur route; renumbered Iowa 123 when I-129 was designated
Iowa 130 1926.svg Iowa 130 1219 Iowa 9 near Cresco Minnesota border near Harmony, Minn 01925-01-01192501930-01-011930Renumbered Iowa 139 so Iowa 130 could be reused as a spur of US 30
Iowa 130 1926.svg Iowa 130 1118 Nebraska border US 30  / US 75 in Missouri Valley 01930-01-01193001931-01-011931Formerly Iowa 27; replaced by relocated US 30
Circle sign 130 (small).svg Iowa 130 6.65 [5] 10.70 Maquoketa Caves State Park US 61 near Maquoketa 01931-01-01193101966-01-011966Park access road; became a county road (later numbered Y31); was Iowa 428 from 1980 to 2003
Elongated circle 130.svg Iowa 130 32.02351.536 Iowa 38 in Tipton I-80  / US 61 at Davenport 01969-01-011969currentFormer section of Iowa 150
Iowa 131 1926.svg Iowa 131 2 [10] 3.2 US 20 near Holstein US 59 near Holstein01925-01-01192501937-01-011937Section from US 20 to Holstein replaced by realigned US 59; rest given to county because US 59 was realigned
Circle sign 131.svg Iowa 131 4.5207.274 Iowa 21 in Belle Plaine US 30 near Belle Plaine01937-01-01193702003-01-012003Part of the Lincoln Highway; now County Road V40
Circle sign 132 (small).svg Iowa 132 5.74 [19] 9.24 I-35  / I-80 in Des Moines Iowa 90 (now US 6) in Des Moines01925-01-01192501963-01-011963Now Douglas Avenue
Iowa 133 1926.svg Iowa 133 4.23 [16] 6.81 US 34  / US 218 in Mount Pleasant Oakland Mills Park (then a state park)01925-01-01192501961-01-011961Park access road; became a county road (now numbered H61)
Circle sign 133.svg Iowa 133 0.9701.561 US 30 in Nevada Nevada01964-01-01196402003-01-012003Spur route; now 6th Street
Iowa 134 1926.svg Iowa 134 711 US 65 near Hubbard Iowa 58 01925-01-01192501930-01-011930Replaced by relocated Iowa 58
Iowa 134 1926.svg Iowa 134 813 Nebraska state line US 34  / US 275 in Glenwood 01930-01-01193001935-01-011935Replaced by relocated US 34
Circle sign 134 (small).svg Iowa 134 4.066.53 US 65 near Hampton Geneva 01935-01-01193501980-01-011980Spur route; now County Road C47
Circle sign 134.svg Iowa 134 1.75 [20] 2.82Beed's Lake State Park Iowa 3 near Hampton 01980-01-01198001987-01-011987Park access road; now County Road S42
Iowa 135 1926.svg Iowa 135 0.75 [21] 1.21 US 30 near Le Grand Le Grand01926-01-01192601954-01-011954Spur route; replaced by relocated US 30; Iowa 135 on route shown below
Circle sign 135 (small).svg Iowa 135 1.963.15 Montour US 30 near Montour01954-01-01195401980-01-011980Spur route; now County Road T47
Elongated circle 136.svg Iowa 136 87.611140.996 IL 136 at Clinton US 20  / US 52 at Dyersville 01926-01-011926current
Iowa 137 1926.svg Iowa 137 2134 US 34 at Lucas US 65 near Indianola 01926-01-01192601934-01-011934Formerly No. 65; replaced by realigned US 65
Elongated circle 137.svg Iowa 137 14.52623.377 Iowa 5 at Albia US 63  / Iowa 163 at Eddyville 01934-01-011934currentFormerly Iowa 59
Circle sign 138 (small).svg Iowa 138 3.16 [22] 5.09 Iowa 2 near Mystic Mystic01926-01-01192601973-01-011973Formerly No. 69; now County Road T14
Iowa 139 1926.svg Iowa 139 2134 US 161 in Iowa City Iowa 38 near Rochester 01926-01-01192601929-01-011929Formerly No. 74; replaced by an extended Iowa 1
Elongated circle 139.svg Iowa 139 11.43118.396 Iowa 9 near Cresco MN 139 near Harmony, Minn 01930-01-011930currentFormerly Iowa 130; continued south to Protivin from 1935 to 1980
Elongated circle 140.svg Iowa 140 25.30940.731 US 20 at Moville Iowa 3 at Remsen 01926-01-011926currentFormerly No. 30; continued south to Sloan from 1931 to 1961, and to Hornick from 1961 to 1964; section from Kingsley to Remsen deleted in 1965, but restored in 1980
Elongated circle 141.svg Iowa 141 155.362250.031 I-29 near Sloan I-35  / I-80 at Grimes 01926-01-011926current
Circle sign 142 (small).svg Iowa 142 10.50 [5] 16.90 Route 202 at Coatsville, Mo Iowa 2 near Moulton 01926-01-01192601968-12-311968Former Iowa 71; renumbered Iowa 202
Circle sign 142.svg Iowa 142 20.90133.637 Iowa 2 in Plano Iowa 5 near Moravia 01980-01-01198002003-01-012003Now County Roads S70 and J18
Elongated circle 143.svg Iowa 143 12.04919.391 Iowa 3 at Marcus Iowa 10 at Granville 01926-01-011926current
Elongated circle 144.svg Iowa 144 34.03954.780 Iowa 141 at Perry Iowa 175 near Harcourt 01926-01-011926current
Iowa 145 1926.svg Iowa 145 58.0 Iowa 5 near Cleghorn Cleghorn01926-01-01192601931-01-011931Formerly No. 32; became a county road (now numbered L40)
Circle sign 145.svg Iowa 145 7.40811.922 I-29 near Thurman US 275 near Sidney 01931-01-01193102003-01-012003Originally a spur route west to Thurman; extended west in 1980; now County Road J24
Elongated circle 146.svg Iowa 146 42.73568.775 US 63  / Iowa 102 in New Sharon US 30 in Le Grand 01926-01-011926current
Circle sign 147.svg Iowa 147 6.70610.792 Rockford Iowa 14 in Floyd County 01926-01-01192602003-01-012003Spur route, former Iowa 53; now County Road B45
Elongated circle 148.svg Iowa 148 66.828107.549 Route 148 near Bedford I-80  / US 6 near Anita 01926-01-011926current
Elongated circle 149.svg Iowa 149 65.897106.051 US 34 in Ottumwa I-80 near Williamsburg 01926-01-011926currentSection from I-80 to US 6 removed 1985
Iowa 150 1926.svg Iowa 150 1931 US 32 at Homestead US 30 near Cedar Rapids 01926-01-01192601930-01-011930Formerly No. 13; replaced by an extended Iowa 149
Iowa 150 1926.svg Iowa 150 1016 Schleswig Iowa 141 near Denison 01930-01-01193001930-01-011930Replaced by an extended Iowa 21
Iowa 150 1926.svg Iowa 150 22.9636.95 US 30  / Iowa 17 in Jefferson Iowa 64 in Panora 01931-01-01193101941-01-011941Replaced by relocated Iowa 17 to avoid conflict with new Iowa 150, which was proposed to become part of US 150
Elongated circle 150.svg Iowa 150 85.093136.944 US 218 at Vinton US 52  / Iowa 24 at Calmar 01941-01-011941current
Iowa 151 1926.svg Iowa 151 13 [10] 21 US 71 at Auburn Iowa 17 near Lake City 01926-01-01192601938-01-011938Formerly No. 35; renumbered Iowa 188 when US 151 extended into Iowa
Circle sign 152 (small).svg Iowa 152 1.312.11 US 34 near Murray Murray01926-01-01192601980-01-011980Formerly No. 8; now County Road R16
Circle sign 152.svg Iowa 152 1.4022.256 I-35 near Osceola US 69 at Osceola01980-01-01198002014-01-012014Now County Road R35
Iowa 153 1926.svg Iowa 153 7.011.3 Iowa 117 in Wyoming Oxford Junction 01926-01-01192601930-01-011930Replaced by an extended Iowa 136
Iowa 153 1926.svg Iowa 153 4.82 [6] 7.76 US 218 near North Liberty US 6 near Coralville 01930-01-01193001957-01-011957Replaced by rerouted US 218 and local roads
Circle sign 153 (small).svg Iowa 153 1.02 [5] 1.64 US 218 near North Liberty North Liberty01957-01-01195701968-01-011968Former portion of US 218; now Dubuque Street
Circle sign 154.svg Iowa 154 12.8220.63 Iowa 150 near Fayette Iowa 3 in Maryville 01926-01-01192601980-11-011980Replaced by Iowa 187
Iowa 155 1926.svg Iowa 155 7.011.3 Commerce Iowa 28 (now 9th Street) in Des Moines 01927-01-01192701931-01-011931Spur route; now Walnut Woods Drive, Browns Woods Drive, and McKinley Avenue; parts of the road were destroyed
Circle sign 155.svg Iowa 155 3.054.91 Nodaway US 34 near Nodaway01933-01-01193301980-10-011980Spur route; now County Road N26, 8th Avenue and 3rd Street
Circle sign 156.svg Iowa 156 4.7487.641 Iowa 5 near Marysville Bussey 01928-01-01192802003-01-012003Spur route, section inside Bussey removed 1980; now County Road G71
Iowa 157 1926.svg Iowa 157 0.150.24 Monticello US 161 near Monticello01928-01-01192801931-01-011931Spur route; now Cedar Street; was the shortest state highway at the time
Circle sign 157.svg Iowa 157 1.0321.661 US 63 near Lime Springs Lime Springs01931-01-01193102003-01-012003Spur route; now County Road A21
Circle sign 158 (small).svg Iowa 158 0.65 [16] 1.05 Iowa 60 near Carlisle Carlisle 01929-01-01192901962-01-011962Spur route; now School Street
Circle sign 159 (small).svg Iowa 159 1.832.95 Iowa 92 near Harper Harper01929-01-01192901980-01-011980Spur route; now County Road V67
Iowa 160 1926.svg Iowa 160 0.82 [8] 1.32Wild Cat Den State Park US 61 01930-01-01193001947-01-011947Renumbered Iowa 389 so Iowa 160 could be reused as a spur of Iowa 60 (this section now Iowa 415)
Elongated circle 160.svg Iowa 160 2.4463.936 Iowa 415 at Ankeny I-35 at Ankeny01947-01-011947currentextended east from US 69 to I-35 in 1980
Iowa 161 1926.svg Iowa 161 1.15 [8] 1.85 Iowa 25 in Guthrie County Springbrook State Park 01938-01-01193801944-01-011944Renumbered Iowa 384 so Iowa 161 could be reused as a spur of US 61
Iowa 161 1926.svg Iowa 161 0.47 [23] 0.76 US 61 in Keokuk Illinois state line01944-01-01194401951-01-011951Replaced by US 136
Circle sign 161.svg Iowa 161 1.2241.970 Iowa 141 at Dedham Iowa 141 near Dedham01951-01-01195102003-01-012003Former route of Iowa 141; now County Roads E60 and N33
Circle sign 162.svg Iowa 162 2.6604.281 Pammel State Park Iowa 92 in Madison County 01930-01-01193001982-01-011982Park access road; renumbered Iowa 322 to avoid confusion with nearby US 169
Iowa 162 2.03.2 US 18 in Charles City US 218 in Charles City02000-01-01200002006-01-012006Former section of US 218; became part of relocated US 18
Iowa 163 1926.svg Iowa 163 11.6Ambrose A. Call State Park US 169 near Algona 01930-01-01193001934-01-011934Park access road; renumbered Iowa 274 when US 163 was designated
Elongated circle 163.svg Iowa 163 166.270267.586 US 69 in Des Moines US 34 at Burlington 01937-01-011937current
Circle sign 164.svg Iowa 164 3.79 [17] 6.10 US 30 in Boone Ledges State Park01930-01-01193001990-01-011990Park access road; now County Road R27
Iowa 165 1926.svg Iowa 165 4.67 [21] 7.52 Lewis and Clark State Park US 75 in Onawa 01930-01-01193001955-01-011955Park access road; replaced by an extended Iowa 175
Elongated circle 165.svg Iowa 165 0.4100.660Abbott Drive at Omaha, Neb. Abbott Drive at Omaha, Neb.01956-01-011956currentOnly state highway west of the Missouri River
Circle sign 166.svg Iowa 166 0.570.92 Hastings US 34 near Hastings01930-01-01193001980-11-011980Spur route; now County Road M16
Circle sign 167 (small).svg Iowa 167 3.215.17 Doon US 75 near Doon01930-01-01193001980-01-011980Spur route; now Main Street, 3rd Avenue and County Road A44
Circle sign 168 (small).svg Iowa 168 2.704.35 Iowa 83 near Minden Shelby 01930-01-01193001980-01-011980Spur route; now County Road M16
Iowa 169 1926.svg Iowa 169 34.8 Elk Horn Iowa 7 at Kimballton 01930-01-01193001930-01-011930Spur route; renumbered Iowa 173 when US 169 was created in Iowa
Circle sign 170 (small).svg Iowa 170 1.68 [22] 2.70 Everly US 18 near Everly01930-01-01193001974-01-011974Spur route, former portion of US 18; now County Road M27
Iowa 171 1926.svg Iowa 171 11.6Wall Lake State Park (now Big Wall Lake Wildlife Area) US 75 in Onawa 01930-01-01193001935-01-011935Park access road; now an unnumbered county road
Circle sign 171 (small).svg Iowa 171 1.051.69 Elberon Iowa 21 near Elberon01935-01-01193501980-01-011980Spur route; now Main Street and County Road E44
Circle sign 172 (small).svg Iowa 172 4.236.81 Elgin US 18 in Clermont 01930-01-01193001980-01-011980Spur route; now County Road W51 and Main, Clermont and Center Streets
Elongated circle 173.svg Iowa 173 14.68023.625 Iowa 83 near Atlantic Iowa 44 at Kimballton 01930-01-011930currentOriginally a spur route south to Elk Horn; extended in 1980
Circle sign 174 (small).svg Iowa 174 3.61 [18] 5.81 Farragut Iowa 2 near Farragut01930-01-01193001976-01-011976Spur route; now County Road M16
Elongated circle 175.svg Iowa 175 221.367356.256 N-51 at Decatur, Neb US 63 near Hudson 01930-01-011930currentOriginally a spur route
Circle sign 176 (small).svg Iowa 176 1.21 [13] 1.95 Iowa 92 near Cumberland Cumberland 01930-01-01193001972-01-011972Spur route; now County Road N28 and Jackson, 1st, and Main Streets
Iowa 177 1926.svg Iowa 177 11.6 Carson US 59 near Carson01930-01-01193001937-01-011937Spur route; decommissioned when Iowa 100 (now Iowa 92) extended west through Carson
Circle sign 177 (small).svg Iowa 177 3.205.15 Iowa 9 near Osage Mitchell 01937-01-01193701980-01-011980Spur route; now County Road T28
Circle sign 178 (small).svg Iowa 178 0.981.58 Iowa 9 near Little Rock Little Rock01930-01-01193001980-01-011980Spur route; now Main Street and Maple Avenue
Circle sign 179 (small).svg Iowa 179 0.821.32 US 69 near Klemme Klemme 01930-01-01193001980-01-011980Spur route; now 168th Street and Main Street
Circle sign 180 (small).svg Iowa 180 2.463.96 Hayesville Iowa 149 near Hayesville01930-01-01193001980-01-011980Spur route; now County Road G49
Iowa 181 1926.svg Iowa 181 34.8 Riverside US 161 near Riverside01930-01-01193001931-01-011931Spur route; replaced by an extended Iowa 22
Circle sign 181.svg Iowa 181 9.59615.443 Iowa 5  / Iowa 92 near Pleasantville Melcher-Dallas 01931-01-01193102003-01-012003Spur route; now County Road S45
Circle sign 182 (small).svg Iowa 182 11.44 [5] 18.41 Iowa 9 in Lansing MN 26 at New Albin 01930-01-01193001968-12-311968Swapped with Iowa 26
Elongated circle 182.svg Iowa 182 9.05114.566 US 18 in Inwood Iowa 9 near Larchwood 01969-01-011969currentFormerly Iowa 26
Elongated circle 183.svg Iowa 183 29.95248.203 Iowa 127 near Mondamin Iowa 141 in Ute 01930-01-011930currentContinued south to US 6 until 1981, and to Council Bluffs city limits until 2003
Iowa 184 1926.svg Iowa 184 2642 Blockton US 34 near Creston 01930-01-01193001932-01-011932Spur route; replaced by an extended Iowa 25
Circle sign 184.svg Iowa 184 15.02624.182 US 275 near Randolph US 59 near Randolph01934-01-01193402003-01-012003Originally a spur route from US 275 to Randolph; now County Road J18
Circle sign 185 (small).svg Iowa 185 1.51 [24] 2.43 Iowa 14 near Conrad Conrad01934-01-01193401978-01-011978Spur route; now County Road D67
Circle sign 186 (small).svg Iowa 186 3.275.26 US 34 near Prescott Prescott01930-01-01193001980-01-011980Spur route; now County Road N61 and 6th Avenue
Circle sign 186.svg Iowa 186 3.375 [25] 5.432Green Valley State Park Iowa 25 in Creston 01980-01-01198002001-01-012001Park access road; now unnumbered county roads (Green Valley Road and 130th Street) and Lincoln Street
Iowa 187 1926.svg Iowa 187 914 Iowa 10 in Alton Hospers 01930-01-01193001931-01-011931Spur route; replaced by Iowa 33
Elongated circle 187.svg Iowa 187 28.38545.681 US 20 near Masonville Iowa 150 near Fayette 01931-01-011931currentOriginally was a park access road to Backbone State Park; moved to current route in 1980
Iowa 188 1926.svg Iowa 188 26 [10] 42 US 52  / Iowa 10 at Luxemburg US 161 at Cascade 01930-01-01193001938-01-011938Replaced by an extended Iowa 136
Iowa 188 1926.svg Iowa 188 1321 US 71 at Auburn Iowa 17 near Lake City 01938-01-01193801940-01-011940Formerly No. 35 and Iowa 151; replaced by an extended Iowa 175
Elongated circle 188.svg Iowa 188 24.23138.996 Iowa 3 near Clarksville US 63 near Tripoli 01945-01-011945current
Circle sign 189 (small).svg Iowa 189 1.001.61 Bridgewater Iowa 92 north or Bridgwater01930-01-01193001980-01-011980Spur route; now County Road N51
Iowa 190 1926.svg Iowa 190 1016 Ashton Iowa 9 in Sibley 01930-01-01193001931-01-011931Spur route; replaced by Iowa 33
Circle sign 190 (small).svg Iowa 190 7.4612.01 Fairbank Iowa 150 near Oelwein 01931-01-01193101980-01-011980Replaced by Iowa 281
Elongated circle 191.svg Iowa 191 22.79036.677 I-680 near Neola Iowa 37 at Earling 01930-01-011930currentcontinued south to US 6 until 1981, and to Council Bluffs city limits until 2003
Iowa 192 1926.svg Iowa 192 1016 US 75 in Sloan Iowa 141 near Hornick 01930-01-01193001931-01-011931Became part of an extended Iowa 140
Circle sign 192.svg Iowa 192 5.0908.192 I-29  / I-80 at Council Bluffs I-29 at Council Bluffs 01931-01-01193102017-01-012017Renumbered from Iowa 241; was decommissioned in 1975, but restored in 1980; truncated in 2016; now city streets
Circle sign 193.svg Iowa 193 10.85217.465 US 18 in Fayette County Iowa 24 in Jackson Junction 01930-01-01193002003-01-012003Now County Road V68
Iowa 194 1926.svg Iowa 194 0.86 [6] 1.38 Iowa 2 in Clarinda Clarinda Treatment Center01930-01-01193001958-01-011958Hospital access road; now 16th Street
Iowa 195 1926.svg Iowa 195 3 [10] 4.8 US 69 in Jewell Ellsworth 01930-01-01193001935-01-011935Spur route; became part of an extended Iowa 175
Circle sign 195.svg Iowa 195 2.8964.661 Iowa 4 near Plover Plover01935-01-01193502003-01-012003Spur route; now County Road C15
Iowa 196 1926.svg Iowa 196 11.6 US 20 near Williams Williams01930-01-01193001932-01-011932Was proposed to replace part of US 20, which was to be shifted south, but the plan to relocate US 20 was abandoned in 1932; portion now County Road D25
Elongated circle 196.svg Iowa 196 10.13616.312 US 71  / Iowa 175 near Lake View US 20 near Sac City 01935-01-01193502015-01-012015Replaced by a rerouted US 71
Iowa 197 1926.svg Iowa 197 7 [10] 11 Stratford Iowa 60 near Stanhope 01930-01-01193001937-01-011937Spur route; became part of an extended Iowa 175
Circle sign 197.svg Iowa 197 2.5674.131 Iowa 3 near Albert City Albert City01937-01-01193702003-01-012003Spur route; now Main Street and County Road N14
Circle sign 198.svg Iowa 198 2.2313.590 Garrison US 218 near Garrison01930-01-01193002003-01-012003Spur route, section in Garrison removed 1980; now County Road V66
Circle sign 199.svg Iowa 199 2.6664.291 Van Horne US 218 near Van Horne01930-01-01193002003-01-012003Spur route, section in Van Horne removed 1980; now County Road E44
Circle sign 200.svg Iowa 200 2.1633.481 US 30 near Keystone Keystone01930-01-01193002003-01-012003Spur route, section in Keystone removed 1980; now County Road V42
Circle sign 201.svg Iowa 201 4.7557.652 Norway US 30  / US 218 near Atkins 01930-01-01193002003-01-012003Spur route; now County Road W24
Circle sign 202 (small).svg Iowa 202 8.13 [5] 13.08 US 218 Shellsburg 01930-01-01193001967-01-011967Spur route; became a county road (now numbered E36)
Elongated circle 202.svg Iowa 202 10.46116.835 Route 202 at Coatsville, Mo Iowa 2 near Moulton 01969-01-011969currentFormerly Iowa 142
Circle sign 203 (small).svg Iowa 203 8.7814.13 Terril Iowa 9 01930-01-01193001980-01-011980Spur route; original east-west spur now County Road A34, north-south spur now County Road N14, Main and State streets
Circle sign 204.svg Iowa 204 5.4078.702 Iowa 2 near Garden Grove Garden Grove01930-01-01193002003-01-012003Spur route; now County Roads R20 and J69
Circle sign 205.svg Iowa 205 2.9274.711 US 65 near Milo Milo01930-01-01193002003-01-012003Spur route; now County Road G58
Circle sign 206.svg Iowa 206 6.22110.012 US 65 near Liberty Center Liberty Center01930-01-01193002003-01-012003Spur route; now County Road G76
Circle sign 207.svg Iowa 207 3.0584.921 I-35 near New Virginia New Virginia01930-01-01193002003-01-012003Spur route; now County Road G76
Iowa 208 1926.svg Iowa 208 1423 US 20 Backbone State Park 01930-01-01193001931-01-011931Park access road; renumbered Iowa 187
Circle sign 208 (small).svg Iowa 208 11.83 [22] 19.04 Iowa 2 Blanchard 01931-01-01193101974-01-011974Spur route; now County Road M48
Circle sign 209 (small).svg Iowa 209 0.66 [18] 1.06 Iowa 149 near Conroy Conroy01931-01-01193101976-01-011976Spur route; now County Road F34
Elongated circle 210.svg Iowa 210 34.78155.975 Iowa 141 near Woodward US 65 near Collins 01931-01-011931currentOriginally a double spur route from Slater to Maxwell; extended in 1980
Circle sign 211 (small).svg Iowa 211 1.632.62 Cambridge Iowa 210 near Cambridge01931-01-01193101980-01-011980Spur route; now County Road R70
Iowa 212 1926.svg Iowa 212 2032 Iowa 8 in Dysart US 30 in Belle Plaine 01931-01-01193101933-01-011933Replaced by an extended Iowa 73, which was renumbered Iowa 212 9 months later; this portion became part of Iowa 21 a month later
Elongated circle 212.svg Iowa 212 12.15719.565 Iowa 21 near Belle Plaine US 6 at Marengo 01934-01-011934currentcontinued northwest to US 30 from 1937 to 1980
Circle sign 213.svg Iowa 213 3.725.99 Blakesburg US 34 north of Blakesburg01931-01-01193101980-12-011980Spur route; now County Road T61
Circle sign 214.svg Iowa 214 5.7369.231 Iowa 175 near Ivester Wellsburg 01931-01-01193102003-01-012003Spur route; now County Road T19
Circle sign 215.svg Iowa 215 8.73814.062 Union Iowa 175 in Eldora 01931-01-01193102003-01-012003Spur route; now County Road S62
Circle sign 216.svg Iowa 216 1.70 [15] 2.74 Iowa 5 Exline 01931-01-01193101981-01-011981Spur route; now County Road T16
Circle sign 217.svg Iowa 217 4.96 [17] 7.98 Breda US 71 01931-01-01193101989-01-011989Spur route; now County Road E16
Circle sign 219.svg Iowa 219 1.532.46 Iowa 9 near Lake Park Lake Park01931-01-01193101980-12-011980Spur route; now County Road M27
Elongated circle 220.svg Iowa 220 7.23311.640 US 6 at South Amana US 151 at Amana 01931-01-011931currentContinued east to East Amana and south to Upper South Amana until 1980
Iowa 221 1926.svg Iowa 221 11 [10] 18 US 71 near Albert City Albert City 01931-01-01193101937-01-011937Spur route; became a county road (now numbered C29)
Iowa 221 1926.svg Iowa 221 42.61 [8] 68.57 Iowa 5 near Cherokee Iowa 17  / Iowa 10 at Pocahontas 01937-01-01193701945-01-011945Extended in both directions and renumbered Iowa 3
Circle sign 221.svg Iowa 221 3.9096.291 I-35 near Story City Roland 01947-01-01194702003-01-012003Spur route, section from I-35 to US 69 removed 1980; now County Road E18
Circle sign 222 (small).svg Iowa 222 15.1224.33 Iowa 15 near Ottosen Livermore 01931-01-01193101980-01-011980Spur route; now County Road C20
Circle sign 223.svg Iowa 223 12.22 [9] 19.67 Iowa 330 near Baxter Iowa 14 near Baxter01931-01-01193101997-01-011997Originally a spur route, extended west from Baxter in 1980; now County Road F17
Elongated circle 224.svg Iowa 224 10.58717.038 US 6 near Kellogg Iowa 14 near Laurel 01931-01-011931currentOriginally a spur route; extended north from Kellogg in 1980
Circle sign 225.svg Iowa 225 7.68812.373 Sully Iowa 146 in Searsboro 01931-01-01193102003-01-012003Spur route; now County Road F62
Circle sign 226.svg Iowa 226 10.7817.35 US 18 Titonka 01931-01-01193101980-12-011980Spur route; now County Road P64
Circle sign 227.svg Iowa 227 5.39 [26] 8.67 US 218 near Stacyville Stacyville 01931-01-01193101991-01-011991Spur route; now County Road T40
Circle sign 228 (small).svg Iowa 228 0.85 [19] 1.37 US 6 (this section became County Road F58 in 2003) near Walcott Walcott 01931-01-01193101964-01-011964Spur route; now Main Street
Circle sign 229.svg Iowa 229 5.2338.422 Garwin US 63 in Tama County 01931-01-01193102003-01-012003Spur route; now County Road E29
Iowa 230 1926.svg Iowa 230 1 [10] 1.6 Sergeant Bluff US 75 near Sergeant Bluff01931-01-01193101934-01-011934Spur route; decommissioned because US 75 was rerouted through Sergeant Bluff, and Iowa 230 was reassigned to the old route of US 75; part later restored as Iowa 378 in 1942
Circle sign 230 (small).svg Iowa 230 8.60 [19] 13.84 US 75 near Sergeant Bluff US 75 in Sioux City 01934-01-01193401965-01-011965Spur route; now Transit Avenue, Morningside Avenue, Lakeport Road and a county road (now numbered K29)
Circle sign 231.svg Iowa 231 1.83 [15] 2.95 Iowa 10 near Ireton Ireton 01931-01-01193101981-01-011981Spur route; now County Road K30 and 4th Street
Iowa 231 4.0686.547 US 34 west of New London US 34 east of New London02000-01-01200002003-01-012003Former section of US 34, unsigned; now Main Street
Circle sign 232 (small).svg Iowa 232 1.993.20 Earlham I-80 near Earlham01931-01-01193101980-01-011980Spur route; now County Road P57
Circle sign 233.svg Iowa 233 5.30 [17] 8.53 Albion Iowa 14 near Rhodes 01931-01-01193101989-01-011989Spur route; became part of relocated Iowa 330
Circle sign 234.svg Iowa 234 6.72 [17] 10.81 US 30 in State Center Iowa 330 near Rhodes 01931-01-01193101994-01-011994Originally a spur route; only the section north of CR E63 remained after 1989; now an unnumbered county road
Iowa 235 1926.svg Iowa 235 34.8 Iowa 234 near Rhodes Rhodes 01931-01-01193101935-01-011935Spur route; became an unnumbered county road (now 285th Street)
Circle sign 235 (small).svg Iowa 235 1.24 [5] 2.00 Rhodes Iowa 234 near Rhodes 01935-01-01193501966-01-011966Spur route; renumbered Iowa 245 when I-235 was designated
Circle sign 236.svg Iowa 236 1.18 [20] 1.90 Templeton US 71  / Iowa 141 near Templeton01931-01-01193101987-01-011987Spur route; now local roads (Main and 2nd Streets) and County Road N18
Circle sign 237.svg Iowa 237 1.412.27 Iowa 9 near Ocheyedan Ocheyedan 01931-01-01193101981-01-011981Spur route; section in Ocheyedan removed in 1980; now County Road L58
Circle sign 238.svg Iowa 238 1.0631.711 Iowa 9 near Harris Harris01931-01-01193102003-01-012003Spur route; was decommissioned in 1981, but was restored in 1987; now County Road M20
Circle sign 239.svg Iowa 239 0.5100.821 Waubonsie State Park Iowa 2 in Fremont County 01931-01-01193102003-01-012003Park access road; now County Road L48
Circle sign 240.svg Iowa 240 6.38910.282 Royal US 71 in Clay County 01931-01-01193102003-01-012003Spur route; now Main Street, County Roads M36 and B40
Iowa 241 1926.svg Iowa 241 58.0 US 34  / US 275 at Council Bluffs US 34  / US 275 01931-01-01193101931-01-011931Renumbered Iowa 192
Circle sign 241 (small).svg Iowa 241 0.991.59 Readlyn Iowa 3 near Readlyn01931-01-01193101980-01-011980Spur route; now local roads
Circle sign 242.svg Iowa 242 5.8559.423 US 34 in Mills County Silver City 01931-01-01193102003-01-012003Spur route; now County Road L55
Circle sign 243 (small).svg Iowa 243 7.9712.83 Iowa 140 near Kingsley Pierson 01931-01-01193101980-01-011980Spur route; now County Road D12
Circle sign 243.svg Iowa 243 0.5590.900 Black Hawk Lake State Park US 71  / Iowa 175 near Wall Lake 01980-01-01198002003-01-012003Park access road; now an unnumbered county road
Circle sign 244 (small).svg Iowa 244 1.963.15 Henderson US 59 01931-01-01193101980-01-011980Spur route; now County Roads H12 and M21 and Maple Street
Circle sign 244.svg Iowa 244 0.7711.241 I-80 near Neola Iowa 191 in Neola01980-01-01198002003-01-012003Now County Road L55
Iowa 245 1926.svg Iowa 245 1.54 [16] 2.48 Iowa 9 near Estherville Fort Defiance State Park01931-01-01193101961-01-011961Park access road; became a county road (now numbered N26)
Circle sign 245.svg Iowa 245 1.24 [17] 2.00 Rhodes Iowa 234 near Rhodes 01966-01-01196601990-01-011990Spur route; portion outside of Rhodes removed in 1989; now County Road E63
Circle sign 246.svg Iowa 246 3.265.25 US 61 in Zwingle La Motte 01931-01-01193101981-01-011981Spur route; section outside La Motte deleted in 1980; now County Road D55 and city streets
Circle sign 247 (small).svg Iowa 247 0.68 [19] 1.09 Chelsea Iowa 212 near Chelsea01931-01-01193101963-01-011963Spur route; became a county road (now numbered V18)
Circle sign 248 (small).svg Iowa 248 0.540.87 Independence State Hospital US 20 in Independence 01931-01-01193101980-01-011980Hospital access road; now 20th Avenue SW
Circle sign 249.svg Iowa 249 0.6651.070 Iowa 78 near Winfield Winfield01931-01-01193102003-01-012003Spur route; now County Road V66
Circle sign 250 (small).svg Iowa 250 0.590.95 Lakota US 169  / Iowa 9 near Lakota01932-01-01193201980-01-011980Spur route; now a local road
Circle sign 251 (small).svg Iowa 251 1.712.75 St. Charles I-35 near St. Charles01932-01-01193201980-01-011980Spur route; now County Road G50
Circle sign 252.svg Iowa 252 0.5840.940 US 61  / Iowa 92 near Grandview Grandview01932-01-01193202003-01-012003Spur route
Circle sign 253.svg Iowa 253 0.9321.500 Iowa 14 near Williamson Williamson01932-01-01193202003-01-012003Spur route
Circle sign 254 (small).svg Iowa 254 0.45 [5] 0.72 Iowa 92 at Massena Massena01932-01-01193201968-12-311968Spur route; renumbered Iowa 322
Circle sign 254 (small).svg Iowa 254 7.9112.73 Iowa 9 near Buffalo Center MN 254 near Rake 01969-01-01196901980-01-011980Spur route; formerly Iowa 322
Iowa 254 2.74.3dead end northwest of Nashua dead end southeast of Nashua02003-01-01200302004-01-012004Former section of US 218
Circle sign 255 (small).svg Iowa 255 2.263.64 Orchard US 218 near Orchard01932-01-01193201980-01-011980Spur route
Circle sign 256 (small).svg Iowa 256 0.801.29 Iowa 17 near Corwith Corwith01932-01-01193201980-01-011980Spur route
Iowa 257 1926.svg Iowa 257 0.58 [16] 0.93 US 18 near Dickens Dickens 01933-01-01193301960-01-011960Spur route
Circle sign 258.svg Iowa 258 1.9893.201 I-35 near Van Wert US 69 near Van Wert01933-01-01193302003-01-012003Originally a spur route
Circle sign 259.svg Iowa 259 1.0011.611 US 169 near Tingley Tingley01933-01-01193302003-01-012003Spur route; section in Tingley removed 1980
Circle sign 260 (small).svg Iowa 260 2.12 [24] 3.41 Shannon City US 169 near Shannon City01933-01-01193301977-01-011977Spur route
Circle sign 261 (small).svg Iowa 261 33.02 [16] 53.14 Iowa 1 in Iowa City US 151 01930-01-01193001962-01-011962Numbered as a branch of US 161; replaced by relocated Iowa 1
Circle sign 262 (small).svg Iowa 262 1.993.20 US 69 near Galt Galt01933-01-01193301980-01-011980Spur route
Circle sign 263 (small).svg Iowa 263 2.143.44 Coulter Latimer 01933-01-01193301980-01-011980Double spur route with Iowa 3
Iowa 263 12.51120.135 Iowa 14 in Grundy County US 20 near Cedar Falls 02000-01-01200002003-01-012003Former section of US 20
Circle sign 264 (small).svg Iowa 264 2.393.85 Linn Grove Iowa 10 near Linn Grove01933-01-01193301980-01-011980Spur route
Iowa 265 1926.svg Iowa 265 2.08 [16] 3.35 Kent US 34 near Kent01934-01-01193401961-01-011961Spur route
Circle sign 266.svg Iowa 266 1.7092.750 US 69 near Weldon Weldon01934-01-01193402003-01-012003Spur route; section in Weldon removed 1980
Circle sign 267 (small).svg Iowa 267 1.191.92 Iowa 93 near Randalia Randalia01934-01-01193401980-01-011980Spur route
Circle sign 268 (small).svg Iowa 268 6.29 [13] 10.12 US 59 near Irwin Irwin01934-01-01193401971-01-011971Spur route; became part of an extended Iowa 37
Circle sign 269 (small).svg Iowa 269 3.014.84 Iowa 16 near Stockport Stockport01934-01-01193401980-01-011980Spur route
Circle sign 270 (small).svg Iowa 270 1.802.90 Iowa 16 near Hillsboro Hillsboro01934-01-01193401980-01-011980Spur route
Iowa 271 1926.svg Iowa 271 7 [10] 11 Marne US 71 in Atlantic 01934-01-01193401935-01-011935Spur route; replaced by an extended Iowa 83
Circle sign 271 (small).svg Iowa 271 0.841.35 Iowa 4 near Yale Yale01935-01-01193501980-01-011980Spur route
Circle sign 272.svg Iowa 272 6.45 [26] 10.38 Elma US 63 near Elma01934-01-01193401992-01-011992Spur route; formerly Iowa 52
Circle sign 273.svg Iowa 273 10.02516.134 Lake Wapello State Park US 63 near Drakesville 01935-01-01193502003-01-012003Park access road
Circle sign 274.svg Iowa 274 1.99 [12] 3.20Ambrose A. Call State Park US 169 near Algona 01934-01-01193401986-01-011986Park access road; formerly Iowa 163
Circle sign 276.svg Iowa 276 4.7117.582 Spirit Lake city limitsMinnesota state line01934-01-01193402003-01-012003Park access road
Circle sign 277 (small).svg Iowa 277 6.2410.04 Numa Iowa 5 near Centerville 01935-01-01193501980-01-011980Spur route
Circle sign 278 (small).svg Iowa 278 2.053.30 Rathbun Iowa 5 near Rathbun01935-01-01193501980-01-011980Spur route
Circle sign 279.svg Iowa 279 1.9833.191 US 30  / US 218 near Atkins Atkins01935-01-01193502003-01-012003Spur route; section in Atkins removed 1980
Circle sign 280 (small).svg Iowa 280 2.62 [19] 4.22 US 30  / US 218 near Newhall Newhall01935-01-01193501965-01-011965Spur route; renumbered Iowa 287 when I-280 was designated
Elongated circle 281.svg Iowa 281 28.16645.329Waterloo city limits Iowa 150 at Oelwein 01935-01-011935currentOriginally a spur route east to Dunkerton; extended in 1980
Circle sign 282.svg Iowa 282 5.2838.502 Quasqueton Iowa 939 near Winthrop 01935-01-01193502003-01-012003Spur route
Circle sign 283.svg Iowa 283 5.8619.432 Brandon Iowa 150 near Brandon01935-01-01193502003-01-012003Spur route
Circle sign 284 (small).svg Iowa 284 5.588.98 Aurora Iowa 187 at Lamont 01935-01-01193501980-01-011980Spur route
Circle sign 285.svg Iowa 285 0.7961.281 US 30 in Arcadia Arcadia01935-01-01193502003-01-012003Spur route
Circle sign 286.svg Iowa 286 9.93215.984 US 30 in Glidden Lanesboro 01935-01-01193502003-01-012003Spur route
Iowa 287 1926.svg Iowa 287 7.52 [4] 12.10 Farnhamville Iowa 47 in Farnhamville 01935-01-01193501940-01-011940Spur route; replaced by an extended Iowa 175
Circle sign 287 (small).svg Iowa 287 6.19 [19] 9.96 Bradgate Iowa 3 in Gilmore City 01942-01-01194201965-01-011965Spur route
Circle sign 287.svg Iowa 287 1.8332.950 US 30  / US 218 near Newhall Newhall01965-01-01196502003-01-012003Spur route; section in Newhall removed 1980
Circle sign 288 (small).svg Iowa 288 4.587.37 US 65 near Manly Plymouth 01935-01-01193501980-01-011980Spur route
Circle sign 289 (small).svg Iowa 289 6.149.88 Alta Vista US 63 near Lourdes 01935-01-01193501980-01-011980Spur route
Iowa 289 2.2523.624 US 61 near Fort Madison US 61 near Fort Madison02000-01-01200002003-01-012003Former section of US 61 southwest of Fort Madison; had two sections
Circle sign 290 (small).svg Iowa 290 1.993.20 Farmersburg Iowa 13 near Farmersburg01935-01-01193501980-01-011980Spur route
Circle sign 291 (small).svg Iowa 291 1.011.63 Low Moor US 30 near Low Moor01935-01-01193501979-01-011979Spur route
Circle sign 292 (small).svg Iowa 292 3.175.10 Linden Iowa 44 01935-01-01193501980-01-011980Spur route
Circle sign 293 (small).svg Iowa 293 1.422.29 Iowa 90 near Van Meter Van Meter01935-01-01193501980-01-011980Spur route
Circle sign 294.svg Iowa 294 6.1479.893 Iowa 2 in Decatur County Grand River 01935-01-01193502003-01-012003Spur route
Circle sign 295 (small).svg Iowa 295 5.098.19 Westgate Iowa 150 near Maynard 01935-01-01193501980-01-011980Spur route
Circle sign 296 (small).svg Iowa 296 4.447.15CR C24 near Wadena Iowa 56 near Wadena01935-01-01193501980-01-011980Spur route
Iowa 296 0.275 [25] 0.44302000-01-01200002011-01-012011Former section of Iowa 28
Iowa 297 1926.svg Iowa 297 4.25 [4] 6.84 Alexander Iowa 10 01935-01-01193501939-01-011939Spur route; replaced by an extended Iowa 107
Circle sign 297.svg Iowa 297 3.5435.702 Gilbertville Raymond 01940-01-01194002003-01-012003Double spur with I-380
Circle sign 298 (small).svg Iowa 298 4.22 [5] 6.79 Iowa 60 near Kamrar Kamrar 01935-01-01193501966-01-011966Spur route; until 1958 went from US 69 to Kamrar
Circle sign 299.svg Iowa 299 5.5568.942 New Providence Iowa 175 near Eldora 01935-01-01193502003-01-012003Spur route
Circle sign 300.svg Iowa 300 1.4112.271 Modale I-29 near Modale01935-01-01193502003-01-012003Spur route
Circle sign 301.svg Iowa 301 2.0453.291 I-29 near Little Sioux Little Sioux01935-01-01193502003-01-012003Spur route
Circle sign 302 (small).svg Iowa 302 3.004.83 Thor Iowa 3 near Thor01935-01-01193501980-01-011980Spur route
Circle sign 303.svg Iowa 303 3.51 [15] 5.65 US 34 near Fairfield Libertyville 01935-01-01193501981-01-011981Spur route
Circle sign 304 (small).svg Iowa 304 1.592.56 Iowa 78 near Ollie Ollie01935-01-01193501980-01-011980Spur route
Circle sign 305.svg Iowa 305 2.5544.110 Letts US 61  / Iowa 92 near Letts01935-01-01193502003-01-012003Spur route
Circle sign 306.svg Iowa 306 0.7831.260 US 65 near Derby Derby01935-01-01193502003-01-012003Spur route
Circle sign 307 (small).svg Iowa 307 5.31 [18] 8.55 US 169 near East Peru East Peru 01935-01-01193501975-01-011975Spur route; decommissioned when US 169 was rerouted south of Winterset
Circle sign 308 (small).svg Iowa 308 7.32 [5] 11.78 US 63 near New Sharon Barnes City 01935-01-01193501966-01-011966Spur route
Circle sign 309 (small).svg Iowa 309 2.323.73 Beacon Iowa 137 in Oskaloosa 01935-01-01193501980-01-011980Spur route
Circle sign 310 (small).svg Iowa 310 1.68 [5] 2.70 Iowa 92 near Harvey Harvey 01935-01-01193501966-01-011966Spur route
Circle sign 311.svg Iowa 311 4.73 [17] 7.61 Liscomb Iowa 14 near Liscomb01935-01-01193501989-01-011989Spur route; section in Liscomb removed 1980
Circle sign 312 (small).svg Iowa 312 6.199.96 Iowa 9 near Riceville McIntire 01935-01-01193501980-01-011980Spur route
Iowa 312 0.8831.42102002-01-01200202003-01-012003Former section of US 65; had two sections
Circle sign 313.svg Iowa 313 1.591 [25] 2.560 US 59 near Melvin Melvin 01935-01-01193502002-01-012002Spur route; section in Melvin removed 1980
Circle sign 314.svg Iowa 314 6.27710.102 Ayrshire US 18 near Ruthven 01935-01-01193502003-01-012003Spur route
Circle sign 315.svg Iowa 315 4.1586.692 Iowa 4 near Palmer Palmer01935-01-01193502003-01-012003Spur route
Elongated circle 316.svg Iowa 316 5.1838.341 Iowa 5 near Swan Runnells city limits01935-01-011935currentSpur route; continued south to Iowa 163 from 1981 to 2003
Circle sign 317 (small).svg Iowa 317 0.711.14 US 65 near Zearing Zearing01935-01-01193501980-01-011980Spur route; continued west to McCallsburg until 1954
Circle sign 318 (small).svg Iowa 318 5.518.87 Clutier Iowa 21 near Clutier01935-01-01193501980-01-011980Spur route
Circle sign 319 (small).svg Iowa 319 0.500.80 Gravity Iowa 148 at Gravity01935-01-01193501980-01-011980Spur route; continued east to Conway until 1961
Circle sign 320 (small).svg Iowa 320 4.25 [19] 6.84 US 169 near Badger Badger 01935-01-01193501963-01-011963Spur route
Circle sign 321 (small).svg Iowa 321 6.03 [19] 9.70 Clare Iowa 5 near Clare01935-01-01193501963-01-011963Spur route
Circle sign 322 (small).svg Iowa 322 7.91 [11] 12.73 Iowa 9 near Buffalo Center MN 254 near Rake 01935-01-01193501968-12-311968Spur route; renumbered Iowa 254
Circle sign 322 (small).svg Iowa 322 0.45 [13] 0.72 Iowa 92 at Massena Massena01969-01-01196901972-01-011972Spur route; formerly Iowa 254
Circle sign 322.svg Iowa 322 2.6604.281 Pammel State Park Iowa 92 in Madison County 01982-01-01198202003-01-012003Park access road; formerly Iowa 162
Circle sign 323 (small).svg Iowa 323 3.746.02 Iowa 17 near Woolstock Woolstock01935-01-01193501980-01-011980Spur route
Iowa 324 1926.svg Iowa 324 0.79 [21] 1.27 Lawton US 20 near Lawton01935-01-01193501954-01-011954Spur route; decommissioned when US 20 was rerouted closer to Lawton
Circle sign 324.svg Iowa 324 0.5100.821 Iowa 175 near Onawa Lewis and Clark State Park 01956-01-01195602003-01-012003Park access road
Circle sign 325.svg Iowa 325 3.6175.821 Spillville US 52 near Calmar 01935-01-01193502003-01-012003Spur route; section in Spillville removed 1980
Circle sign 326.svg Iowa 326 2.18 [15] 3.51 Bristow Iowa 3 near Bristow01935-01-01193501981-01-011981Spur route
Circle sign 327.svg Iowa 327 2.0703.331 Iowa 276 in Spirit Lake near Orleans 01935-01-01193502003-01-012003Spur route
Circle sign 328.svg Iowa 328 2.293.69 US 20 near Galva Galva01935-01-01193501980-12-011980Spur route
Circle sign 329 (small).svg Iowa 329 4.857.81 US 169 at Boxholm Pilot Mound 01935-01-01193501980-01-011980Spur route
Iowa 330 1926.svg Iowa 330 2.31 [8] 3.72 Ionia US 18 near Ionia01935-01-01193501948-01-011948Spur route; renumbered Iowa 393 so Iowa 330 could be reused as a spur of US 30
Elongated circle 330.svg Iowa 330 47.74876.843 I-80  / US 6  / US 65 at Altoona Iowa 14 near Albion 01948-01-011948currentOriginally went from US 30 to Marshalltown; extended west in 1969 and was relocated to bypass Marshalltown in 1989
Circle sign 331 (small).svg Iowa 331 1.83 [5] 2.95 Eldridge US 61 near Eldridge01935-01-01193501967-01-011967Spur route
Iowa 331 3.8016.117Dead end near I-35 in Des Moines Iowa 28 in Des Moines02002-01-01200202005-01-012005Former section of Iowa 5
Circle sign 332 (small).svg Iowa 332 1.001.61 Pilot Knob State Park Iowa 9 near Forest City 01935-01-01193501980-01-011980Park access road
Elongated circle 333.svg Iowa 333 1.5582.507 I-29 at Hamburg US 275 in Hamburg01935-01-011935currentOriginally a spur route; section from county line to US 71 removed 1980; reassigned to current route that year, but section from US 275 to US 59 removed 2003
Circle sign 334 (small).svg Iowa 334 1.873.01 US 63 near Frederika Frederika01935-01-01193501980-01-011980Spur route
Iowa 334 6.600 [27] 10.62202006-01-01200602007-01-012007Former section of US 34
Circle sign 335 (small).svg Iowa 335 0.641.03 Iowa 141 near Dawson Dawson01935-01-01193501980-01-011980Spur route
Iowa 335 1.536 [25] 2.472 Iowa 163 in Otley Iowa 163 in Otley01999-01-01199902001-01-012001Former section of Iowa 163
Circle sign 336 (small).svg Iowa 336 2.483.99 Iowa 150 near Rowley Rowley01936-01-01193601980-01-011980Spur route
Circle sign 337 (small).svg Iowa 337 3.365.41 Iowa 9 near Grafton Grafton01936-01-01193601980-01-011980Spur route
Iowa 337 2.764 [25] 4.448 US 218 in Charles City US 18 in Charles City 02000-01-01200002001-01-012001Former section of US 218
Iowa 337 1.085 [28] 1.746 US 151 in Langworthy US 151 in Langworthy02003-01-01200302004-01-012004Former section of US 151
Circle sign 338 (small).svg Iowa 338 1.02 [13] 1.64 Bondurant US 65 01936-01-01193601972-01-011972Spur route
Circle sign 339.svg Iowa 339 6.15 [29] 9.90 George Iowa 9 near George01936-01-01193602000-01-012000Spur route
Circle sign 340.svg Iowa 340 2.2313.590 Pikes Peak State Park Iowa 76 in McGregor 01936-01-01193602003-01-012003Park access road
Iowa 340 1.160 [27] 1.867Dead end in Batavia US 34 in Batavia02005-01-01200502007-01-012007Former section of US 34
Circle sign 341.svg Iowa 341 2.10 [20] 3.38Lost Island Park US 18 near Ruthven 01936-01-01193601988-01-011988Park access road
Iowa 341 0.0620.100 Ruthven US 18 near Ruthven01993-01-01199302003-01-012003Spur route; restoration of part of the previous Iowa 341
Circle sign 342 (small).svg Iowa 342 0.951.53 Iowa 141 near Jamaica Jamaica01936-01-01193601980-01-011980Spur route
Iowa 342 2.23.5Dead end north of Eddyville Iowa 137 in Eddyville02004-01-01200402005-01-012005Former section of US 63
Circle sign 343 (small).svg Iowa 343 1.011.63 Iowa 333 near Northboro Northboro01937-01-01193701980-01-011980Spur route
Iowa 344 1926.svg Iowa 344 7.06 [8] 11.36 Iowa 2 in Bedford Iowa 319 near Conway 01937-01-01193701943-01-011943Park access road; became part of an extended Iowa 49
Circle sign 344.svg Iowa 344 1.075 [25] 1.730State fish hatchery US 169 near Mount Ayr 01943-01-01194302001-01-012001Fish hatchery access road
Iowa 345 1926.svg Iowa 345 0.42 [16] 0.68 Iowa 17 near Graettinger Graettinger 01937-01-01193701960-01-011960Spur route
Elongated circle 346.svg Iowa 346 12.47020.069 US 218  / Iowa 27 at Nashua US 18  / US 63 near New Hampton 01937-01-011937current
Circle sign 347.svg Iowa 347 1.08 [12] 1.74Locust Street at Omaha, Neb. Locust Street at Omaha, Neb.01937-01-01193701986-01-011986
Circle sign 348 (small).svg Iowa 348 0.88 [5] 1.42 Iowa 347 Carter Lake01937-01-01193701967-01-011967
Circle sign 349.svg Iowa 349 1.0321.661 Lake Ahquabi State Park US 65  / US 69 near Indianola 01938-01-01193802003-01-012003Park access road
Iowa 350 1926.svg Iowa 350 2.55 [6] 4.10 US 6 near Davenport Iowa 122 in Davenport01938-01-01193801958-01-011958Now Hickory Grove Road
Circle sign 351.svg Iowa 351 0.861.38 Rembrandt US 71 near Rembrandt01938-01-01193801981-01-011981Spur route; section in Rembrandt removed 1980
Circle sign 352.svg Iowa 352 0.751.21 Truesdale US 71 near Truesdale01938-01-01193801981-01-011981Spur route; section in Truesdale removed 1980
Circle sign 353 (small).svg Iowa 353 0.350.56 Rowan Iowa 3 at Rowan01938-01-01193801980-01-011980Spur route
Iowa 354 1926.svg Iowa 354 0.35 [16] 0.56 Mallard Iowa 17 near Mallard01938-01-01193801960-01-011960Spur route
Iowa 355 1926.svg Iowa 355 0.33 [16] 0.53 Iowa 175 near Radcliffe Radcliffe01938-01-01193801961-01-011961Spur route
Circle sign 356.svg Iowa 356 6.37 [15] 10.25 Packwood Iowa 1 near Packwood01938-01-01193801981-01-011981Spur route; section in Packwood removed 1980
Iowa 356 0.9491.527 Milford West Okoboji 02000-01-01200002003-01-012003Former section of US 71
Circle sign 357 (small).svg Iowa 357 0.59 [19] 0.95 Blockton Iowa 25 near Blockton01938-01-01193801964-01-011964Spur route
Circle sign 358 (small).svg Iowa 358 1.552.49 Whittemore US 18  / Iowa 15 near Whittemore01938-01-01193801980-01-011980Spur route
Circle sign 359.svg Iowa 359 7.38311.882 Buckeye Iowa 941 in Alden 01938-01-01193802003-01-012003Spur route
Circle sign 360 (small).svg Iowa 360 0.64 [19] 1.03 Iowa 5 near Newell Newell01938-01-01193801964-01-011964Spur route
Circle sign 361 (small).svg Iowa 361 0.38 [16] 0.61 Bayard Iowa 25 near Bayard01938-01-01193801962-01-011962Spur route
Circle sign 362 (small).svg Iowa 362 1.171.88 Macedonia US 59 near Macedonia01938-01-01193801980-01-011980Spur route
Circle sign 362.svg Iowa 362 5.4698.802 DeSoto National Wildlife Refuge I-29 at Loveland 01980-01-01198002003-01-012003Park access road
Circle sign 363.svg Iowa 363 1.6162.601 Iowa 150 near Urbana I-380  / Iowa 27 in Urbana01939-01-01193902003-01-012003Spur route; formerly Iowa 92; rerouted to end at I-380 in 1984
Circle sign 364.svg Iowa 364 6.1409.881 Iowa 76 near Waukon Junction Harpers Ferry 01938-01-01193802003-01-012003Spur route; section north of the bridge in Harpers Ferry removed 1980
Circle sign 365.svg Iowa 365 1.071.72 Tracy Iowa 964 near Tracy01939-01-01193901980-11-011980Spur route; did not extend to relocated Iowa 92 when Iowa 92 was rerouted in 1978
Circle sign 366 (small).svg Iowa 366 0.51 [19] 0.82 US 75 near Blencoe Blencoe01939-01-01193901964-01-011964Spur route
Iowa 367 1926.svg Iowa 367 69.7 Nebraska border US 275 in Council Bluffs 01939-01-01193901941-01-011941Replaced by US 275
Circle sign 367 (small).svg Iowa 367 3.395.46 Rutland US 169 near Humboldt 01942-01-01194201980-01-011980Spur route
Circle sign 368 (small).svg Iowa 368 0.50 [19] 0.80 Renwick Iowa 60 near Renwick01939-01-01193901964-01-011964Spur route
Iowa 368 0.1400.225200th Avenue northwest of Hartford Dead end02002-01-012002currentFormer section of Iowa 5
Iowa 369 1926.svg Iowa 369 23.2 Iowa 92 near Knoxville Coal mine01939-01-01193901941-01-011941Now County Road T17
Circle sign 369 (small).svg Iowa 369 5.548.92 Iowa 2 near Moulton Unionville 01942-01-01194201980-01-011980Spur route
Iowa 370 1926.svg Iowa 370 0.460.74 Iowa 57 Dike 01939-01-01193901952-01-011952Spur route
Circle sign 370.svg Iowa 370 3.2655.255 N-370 at Bellevue, Neb. I-29  / US 275 near Council Bluffs 01953-01-01195302014-01-012014Originally ended at US 275 (pre-2003 route); decommissioned in 1980, but restored west of I-29 in 1983
Circle sign 371.svg Iowa 371 0.7151.151 Lake Keomah State Park Iowa 92 near Keomah Village 01939-01-01193902003-01-012003Park access road
Circle sign 372 (small).svg Iowa 372 2.60 [5] 4.18 Preparation Canyon State Park Iowa 183 near Moorhead 01939-01-01193901968-01-011968Park access road
Circle sign 373 (small).svg Iowa 373 4.05 [19] 6.52 Iowa 13 near Waterville Waterville01942-01-01194201964-01-011964Spur route
Iowa 373 2.3073.71302002-01-01200202003-01-012003Former section of US 61 just southwest of Muscatine
Circle sign 374 (small).svg Iowa 374 7.9912.86 US 71 near Sioux Rapids Webb 01942-01-01194201980-01-011980Spur route
Iowa 374 3.6 [30] 5.8 Iowa 163 in Monroe Dead end in Monroe02000-01-01200002000-01-012000Former section of Iowa 163
Circle sign 375 (small).svg Iowa 375 2.95 [13] 4.75 US 6 in Council Bluffs US 275  / Iowa 92 in Council Bluffs01941-01-01194101971-01-011971Now 4th Street, 9th Avenue, 3rd Street, and Harry Langdon Boulevard
Circle sign 376 (small).svg Iowa 376 0.46 [5] 0.74 Iowa 3 near Colesburg Colesburg01942-01-01194201965-01-011965Spur route
Iowa 376 10.33416.631 I-129  / US 20  / US 75 at Sioux City US 75 at Sioux City02001-01-012001current US 75 Business in Sioux City
Circle sign 377 (small).svg Iowa 377 0.550.89Harbor Drive in Sioux City Iowa 970 in Sergeant Bluff 01942-01-01194201980-01-011980Airport access road
Circle sign 378 (small).svg Iowa 378 2.13 [22] 3.43Harbor Drive in Sioux City Iowa 475 (later Iowa 970) in Sergeant Bluff 01942-01-01194201974-01-011974Airport access road
Circle sign 379 (small).svg Iowa 379 4.597.39 Joice Iowa 105 near Lake Mills 01942-01-01194201980-01-011980Spur route
Circle sign 380 (small).svg Iowa 380 1.30 [11] 2.09Ottumwa Regional Airport US 63 near Ottumwa 01943-01-01194301969-01-011969Renumbered Iowa 389 when I-380 was designated
Iowa 381 1926.svg Iowa 381 1.10 [23] 1.77 Iowa 84 near Cedar Rapids US 218 (now Club Road) near Cedar Rapids01943-01-01194301953-01-011953Airport access road; now Wright Brothers Boulevard
Circle sign 381 (small).svg Iowa 381 0.671.08 Iowa 254 near Rake Rake01954-01-01195401980-01-011980Spur route
Circle sign 382.svg Iowa 382 4.7927.712 Lake MacBride State Park Iowa 1 in Solon 01943-01-01194302003-01-012003Park access road
Circle sign 383.svg Iowa 383 1.3112.110 US 69 near Randall Randall01944-01-01194402003-01-012003Spur route
Circle sign 384.svg Iowa 384 1.2311.981 Iowa 25 in Guthrie County Springbrook State Park 01944-01-01194402003-01-012003Park access road
Circle sign 385.svg Iowa 385 3.1515.071 Pacific Junction US 34  / US 275 in Glenwood 01945-01-01194502003-01-012003Spur route
Circle sign 386.svg Iowa 386 2.6854.321 US 52  / Iowa 3 near Sageville US 52  / Iowa 3  / Iowa 32 near Dubuque 01946-01-01194602003-01-012003
Iowa 387 1926.svg Iowa 387 1.04 [31] 1.67 US 65 near Zearing Zearing01946-01-01194601950-01-011950Spur route; replaced by an extended Iowa 317
Circle sign 387 (small).svg Iowa 387 0.520.84 Davenport Municipal Airport US 61 3 miles north of Davenport 01951-01-01195101979-01-011979Airport access road
Circle sign 388 (small).svg Iowa 388 0.350.56 Calumet US 59 at Calumet01946-01-01194601980-01-011980Spur route
Iowa 389 1926.svg Iowa 389 0.82 [16] 1.32Wild Cat Den State Park Iowa 22 01946-01-01194601962-01-011962Park access road
Circle sign 389.svg Iowa 389 1.25 [9] 2.01Ottumwa Regional Airport US 63 near Ottumwa 01969-01-01196901997-01-011997Decommissioned when the first section of Ottumwa bypass opened
Circle sign 390.svg Iowa 390 0.74 [7] 1.19 Marathon Iowa 10 near Marathon01946-01-01194601980-01-011980Spur route
Iowa 390 2.1133.401South of Plainfield North of Plainfield02002-01-01200202003-01-012003Former section of US 218
Circle sign 391 (small).svg Iowa 391 0.50 [13] 0.80 Clinton Municipal Airport US 30 near Clinton 01946-01-01194601972-01-011972Airport access road; now 60th Street
Circle sign 392 (small).svg Iowa 392 0.63 [22] 1.01 Dubuque Regional Airport US 61 near Dubuque 01946-01-01194601974-01-011974Airport access road; now Airport Road
Iowa 392 3.09 [29] 4.97 Iowa 163 in Prairie City Iowa 163 in Prairie City01998-01-01199802000-01-012000Former section of Iowa 163
Circle sign 393 (small).svg Iowa 393 2.403.86 Ionia US 18 near Ionia01948-01-01194801980-01-011980Spur route
Circle sign 394 (small).svg Iowa 394 2.273.65 Iowa 2 near Denmark Iowa Army Ammunition Plant southern entrance01948-01-01194801980-01-011980Spur route
Circle sign 394.svg Iowa 394 10.45416.824Route B at St. Francisville, Mo. US 218 near Donnellson 01980-01-01198002005-01-012005Replaced by Iowa 27
Circle sign 395.svg Iowa 395 0.530.85 Iowa 330 near Melbourne Melbourne 01948-01-01194801983-01-011983Spur route; section in Melbourne removed 1980
Iowa 396 1926.svg Iowa 396 0.89 [21] 1.43 Iowa 14 in Newton US 6 in Newton01948-01-01194801954-01-011954Now 19th Avenue and 8th Street
Circle sign 396 (small).svg Iowa 396 0.520.84 Iowa 175 near Farnhamville Farnhamville01954-01-01195401980-01-011980Spur route
Circle sign 397.svg Iowa 397 0.69 [17] 1.11 Paton Iowa 144 near Paton01948-01-01194801991-01-011991Spur route
Circle sign 398 (small).svg Iowa 398 1.242.00 Brooklyn US 6 near Brooklyn01956-01-01195601980-01-011980Spur route
Circle sign 399 (small).svg Iowa 399 0.65 [19] 1.05 Iowa 74 near Palo Palo01956-01-01195601964-01-011964Spur route
Circle sign 400 (small).svg Iowa 400 4.547.31 Truro I-35 near Truro01957-01-01195701980-01-011980Spur route; not completed until 1958
Circle sign 401.svg Iowa 401 5.32 [17] 8.56 Camp Dodge US 6 in Des Moines 01958-01-01195801991-01-011991Replaced by an extended Iowa 28 south of I-80; rest decommissioned
Circle sign 402 (small).svg Iowa 402 20.933.6 Iowa 8 near Dysart Iowa 412 in Waterloo 01957-01-01195701968-12-311968Replaced by Iowa 21
Circle sign 403 (small).svg Iowa 403 0.701.13 Cushing US 20 near Cushing01958-01-01195801980-01-011980Spur route
Circle sign 403.svg Iowa 403 0.4770.768 SD 48 near Akron Iowa 12 in Akron01980-01-01198002003-01-012003
Circle sign 404.svg Iowa 404 1.3912.239 Montrose US 61 near Montrose 01960-01-01196002003-01-012003Spur route
Iowa 404 1.6292.622 Iowa 3 in Le Mars US 75 at Le Mars02006-01-012006currentSection of US 75 Business in Le Mars
Circle sign 405.svg Iowa 405 0.2490.401 Lone Tree Iowa 22 near Lone Tree01958-01-01195802003-01-012003Spur route; section in Lone Tree removed 1980
Circle sign 406.svg Iowa 406 2.2753.661 US 34 near West Burlington Burlington 01957-01-01195702003-01-012003Formerly Iowa 80; spur route
Circle sign 407 (small).svg Iowa 407 0.47 [5] 0.76 Iowa 99 in Oakville Oakville01957-01-01195701967-01-011967Formerly Iowa 7; spur route
Circle sign 408 (small).svg Iowa 408 7.4011.91 US 169 near Lu Verne Lu Verne01957-01-01195701980-01-011980Spur route
Circle sign 409 (small).svg Iowa 409 0.41 [5] 0.66 US 18 near Garner Garner 01957-01-01195701968-01-011968Formerly Iowa 35; spur route
Circle sign 410.svg Iowa 410 2.1573.471 Backbone State Park Iowa 3  / Iowa 13 near Strawberry Point 01958-01-01195802003-01-012003Park access road
Circle sign 411 (small).svg Iowa 411 0.98 [19] 1.58 US 6 at Marengo CR F15 north of Marengo01957-01-01195701964-01-011964Spur route
Circle sign 412.svg Iowa 412 4.72 [14] 7.60 US 63 in Waterloo US 218 in Waterloo 01960-01-01196001983-01-011983San Marnan Drive in Waterloo
Circle sign 413 (small).svg Iowa 413 3.95 [19] 6.36 US 20 in Fort Dodge Fort Dodge Airport01960-01-01196001980-01-011980Spur route; continued north to Iowa 320 near Badger until Iowa 320 was decommissioned
Circle sign 414 (small).svg Iowa 414 6.12 [13] 9.85 US 6 near Lewis US 71 near Atlantic 01958-01-01195801972-01-011972Former section of Iowa 92; was Iowa 100 for a month in 1958
Elongated circle 415.svg Iowa 415 16.85727.129 US 6 in Des Moines Iowa 141 near Granger 01959-01-011959current
Circle sign 416 (small).svg Iowa 416 4.89 [11] 7.87 Centralia US 20 01959-01-01195901969-01-011969Former section of US 20; sections were renumbered Iowa 418 and Iowa 420 in 1960
Iowa 417 5.38 [5] 8.66 US 67 near Riverdale US 67 near LeClaire 01960-01-01196001968-01-011968Former section of US 67
Circle sign 418 (small).svg Iowa 418 0.85 [5] 1.37 Farley US 20 01960-01-01196001968-01-011968Former section of US 20
Circle sign 419.svg Iowa 419 1.0381.670 Victor US 6  / Iowa 21 near Victor01962-01-01196202003-01-012003Spur route
Circle sign 420 (small).svg Iowa 420 2.37 [11] 3.81 Iowa 136 in Dyersville US 20 01960-01-01196001969-01-011969Former section of US 20
Iowa 421 3.2605.24602000-01-01200002003-01-012003Former section of US 61 northeast of Muscatine
Circle sign 422 (small).svg Iowa 422 0.52 [18] 0.84 US 169 near Burt Burt 01964-01-01196401976-01-011976Spur route; renumbered Iowa 969
Circle sign 424 (small).svg Iowa 424 0.440.71 Iowa 111 in Britt US 18 near Britt01961-01-01196101980-01-011980Spur route
Iowa 424 2.8024.509South of Swedesburg US 218 near Olds 01999-01-01199902003-01-012003Former section of US 218
Circle sign 426 (small).svg Iowa 426 0.520.84 Iowa 92 near Rose Hill Rose Hill 01960-01-01196001980-01-011980Former section of Iowa 92
Circle sign 428 (small).svg Iowa 428 1.211.95 Anamosa US 151 near Anamosa 01965-01-01196501980-01-011980Spur route
Circle sign 428.svg Iowa 428 6.1409.881 Maquoketa Caves State Park US 61 near Maquoketa 01980-01-01198002003-01-012003Park access road
Iowa 431 3.183 [25] 5.123 US 218 near Waverly Iowa 3 in Waverly01998-01-01199802001-01-012001Section of US 218 Business in Waverly
Iowa 431 1.920 [32] 3.090 US 30 near Le Grand 02004-01-01200402014-01-012014Former section of US 30
Iowa 432 1.93.1 Iowa 163 in Oskaloosa Iowa 92 in Oskaloosa01998-01-01199802003-01-012003Former section of Iowa 163
Iowa 434 8.993 [27] 14.473 US 34 in Danville US 34 in West Burlington 02005-01-01200502008-01-012008Former section of US 34
Iowa 437 0.299 [33] 0.481Dead end near Iowa 137 in Eddyville Dead end near Iowa 342 in Eddyville02005-01-01200502008-01-012008Former section of Iowa 137; abandoned road
Iowa 438 1.0521.693 US 34  / Iowa 163 at Mount Pleasant US 218  / Iowa 27 at Mount Pleasant02003-01-012003currentSection of US 218 Business in Mount Pleasant
Iowa 450 0.2680.431 Iowa 10 at Alton Iowa 60 at Alton 02005-01-012005current450th Street
Iowa 460 7.240 [27] 11.65202004-01-01200402007-01-012007Former sections of US 218 and Iowa 394 in Donnellson and Argyle
Iowa 461 10.75017.300 I-280  / US 61 at Davenport I-80  / US 61 at Davenport02010-01-012010current US 61 Business in Davenport
Iowa 463 2.33.7 US 63 near Frederika US 63 near Frederika 02009-01-01200902010-01-012010Former section of US 63
Iowa 470 0.6951.118 US 75 in Merrill 02011-01-012011currentFormer section of US 75
Elongated circle 471.svg Iowa 471 11.16017.960 Iowa 175 near Lake View US 20  / US 71 near Early 02015-01-012015currentFormerly US 71 in Sac County
Iowa 475 31.79 [34] 51.16Business US 75 in Sioux City Iowa 175 in Onawa 01969-01-01196901976-01-011976Former section of US 75; renumbered Iowa 970
Iowa 478 0.7551.215 Iowa 24 in New Hampton North of New Hampton02002-01-01200202003-01-012003Former section of US 63
Iowa 903 0.130.21Just south of Iowa 163 near Leighton 02011-01-012011currentFormer section of Iowa 163
Iowa 904 4.7377.623 US 34  / Iowa 163 west of Fairfield US 34  / Iowa 163 east of Fairfield02008-01-01200802011-01-012011 US 34 Business at Fairfield, did not count mileage within Fairfield city limits
Iowa 906 4.0096.452 Iowa 192 in Council Bluffs I-80  / US 6 near Council Bluffs02016-01-01201602023-01-012023Formerly US 6 through Council Bluffs
Iowa 912 0.22 [29] 0.3501997-01-01199701999-01-011999Former section of Iowa 141
Iowa 913 1.686 [9] 2.71301996-01-01199601997-01-011997Former section of US 61
Iowa 914 1.01 [25] 1.63 Storm Lake city limit boundary Iowa 7 in Storm Lake01996-01-01199602001-01-012001Former section of US 71
Iowa 915 .27 [17] 0.43 Iowa 3  / Iowa 150 in Oelwein Iowa 3  / Iowa 150 in Oelwein01986-01-01198601990-01-011990Former section of Iowa 3/Iowa 150 concurrency
Iowa 915 3.7 [35] 6.001993-01-01199301994-01-011994Former section of Iowa 415 in Ankeny
Iowa 915 .580 [9] 0.933 Iowa 5 in Albia Iowa 5 in Albia01995-01-01199501997-01-011997Former section of Iowa 5
Iowa 916 1.2932.081 Iowa 281 in Oelwein Oelwein city limits01986-01-01198602003-01-012003Originally ended at Iowa 915 in Oelwein; former section of Iowa 150
Iowa 917 0.1490.240 US 61 and Iowa 22 near Muscatine Muscatine city limits01986-01-01198602003-01-012003Former section of Iowa 22
Iowa 918 1.1191.801 Iowa 16 near Eldon Iowa 16 in Eldon01984-01-01198402003-01-012003Former section of Iowa 16; street signs said "Hwy 918"
Iowa 919 0.39 [36] 0.63 Iowa 363 in Urbana Walnut Street in Urbana01984-01-01198401995-01-011995Former section of Iowa 363; now Ash Street and Wood Street
Circle sign 920.svg Iowa 920 12.56020.213 Center Point Iowa 150 near Urbana 01984-01-01198402003-01-012003Former section of Iowa 150
Iowa 921 11.75 [12] 18.91 Iowa 920 in Center Point Hiawatha 01984-01-01198401985-01-011985Former section of Iowa 150
Iowa 921 2.5054.031 US 6  / Iowa 1 in Iowa City US 218 in Iowa City 01985-01-01198502003-01-012003Former section of US 218
Iowa 922 1.27 [12] 2.04 US 61 in Muscatine Iowa 22 in Muscatine01984-01-01198401986-01-011986Former section of US 61; became part of an extended Iowa 38
Iowa 922 1.121.80 Iowa 149 in North English unnamed street in North English01987-01-01198701988-01-011988Former section of Iowa 149
Iowa 922 8.86214.262 US 151 at Cedar Rapids Iowa 100 in Cedar Rapids01989-01-011989current US 151 Business in Cedar Rapids
Iowa 923 8.81914.19301982-01-01198202003-01-012003Former section of US 218; had three sections
Iowa 924 4.00 [15] 6.44 Iowa 175 near Farnhamville Webster–Greene County Line01980-01-01198001982-01-011982Now County Road P29
Iowa 924 2.24 [26] 3.60 US 52 in Dubuque Dead end in Dubuque01983-01-01198301992-01-011992Former section of US 61/US 151 concurrency
Iowa 924 0.6651.070 US 61 near Montrose Dead end in Montrose01994-01-01199402003-01-012003Formerly Iowa 998; former section of US 61
Circle sign 925.svg Iowa 925 26.25942.260 I-80  / US 6 in Adair US 6 near Dexter 01980-01-01198002003-01-012003Former section of US 6
Iowa 926 3.18 [20] 5.12 US 6 Altoona east city limit boundary01980-01-01198001988-01-011988Former section of US 6; originally continued east to Newton
Iowa 926 3.1475.065 US 169  / US 20 Bus at Fort Dodge US 169 at Fort Dodge01990-01-01199002014-01-012014
Circle sign 927.svg Iowa 927 19.01730.605 US 6  / Iowa 38 in Wilton I-280  / US 6 near Davenport 01980-01-01198002003-01-012003Former section of US 6; was signed in 1989
Iowa 928 20.16832.457 Iowa 17 near Webster City CR D20 near Williams 01980-01-01198002003-01-012003Former section of US 20
Iowa 929 0.7891.270 Murray city limitsMaple Street in Murray01980-01-01198002003-01-012003Former section of Iowa 152
Iowa 930 1.7382.797 US 30 near Ames BooneStory county line01972-01-011972currentFormer section of US 30
Iowa 931 1.21.9 Iowa 13 in Coggon Iowa 13 near Coggon01976-01-01197601978-01-011978Former section of Iowa 13
Circle sign 931.svg Iowa 931 8.96214.423 I-35 in Ankeny US 65 in Polk County 01980-01-01198002003-01-012003
Iowa 932 0.1930.311Ryan city limits Iowa 13 in Ryan 01976-01-01197602003-01-012003Former section of Iowa 13
Iowa 933 0.74 [14] 1.19 Iowa 141 in Perry Iowa 141 in Perry01976-01-01197601984-01-011984Former section of Iowa 141
Iowa 933 0.21 [29] 0.3401985-01-01198501999-01-011999Former section of Iowa 58 just south of US 20
Iowa 934 1.07 [7] 1.72 US 61 near Burlington US 61 near Burlington 01976-01-01197601980-01-011980Former section of US 61; now Memorial Park Road
Iowa 934 1.14 [17] 1.83Dallas–Polk county line I-35 in Des Moines 01981-01-01198101989-01-011989Former section of Iowa 90
Iowa 934 4.76 [26] 7.66 US 20 near Moorland US 169 in Fort Dodge 01990-01-01199001991-01-011991Former section of US 20
Iowa 934 0.19 [37] 0.3101992-01-01199201994-01-011994Former section of US 34 just east of Iowa 97, which is now County Road S56
Iowa 934 4.8817.855 Iowa 58 in Cedar Falls US 63 in Waterloo 01998-01-01199802016-01-012016Was an unsigned highway
Iowa 935 0.77 [15] 1.2401976-01-01197601981-01-011981Former section of US 34 parallel to Business US 34 in Burlington
Iowa 935 1.4922.401 I-29 Mills–Pottawattamie county line01982-01-01198202003-01-012003Former section of Iowa 370
Iowa 936 0.087 [36] 0.140east city limits of West Burlington west city limits of Burlington 01976-01-01197601995-01-011995Former section of Iowa 406
Iowa 936 0.2750.443 Iowa 92 near Ainsworth Iowa 923 near Ainsworth 01997-01-01199702003-01-012003Former section of Iowa 92
Iowa 937 4.23 [24] 6.81 Iowa 2 near Bloomfield Iowa 2 near Bloomfield01976-01-01197601977-01-011977Former section of Iowa 2
Iowa 937 0.4600.740 Iowa 141 near Perry US 169 near Perry 01977-01-01197702003-01-012003Former section of Iowa 141
Iowa 938 1.57 [7] 2.53 Iowa 947 near Manchester Manchester Fish Hatchery01976-01-01197601980-01-011980Former Iowa 116
Iowa 938 0.4600.740Union Street in Unionville Unionville south city limit boundary01980-01-01198002003-01-012003Former section of Iowa 369
Iowa 939 6.76 [7] 10.88 US 65 Iowa 2 near Corydon 01976-01-01197601980-01-011980Former section of Iowa 2
Iowa 939 18.93130.466 Iowa 187 near Masonville Black HawkBuchanan county line01980-01-01198002003-01-012003Former section of US 20
Iowa 940 2.51 [7] 4.0401976-01-01197601980-01-011980Former sections of Iowa 2 at County Road S70, County Road T14, and in Centerville
Iowa 940 0.0810.130 TamaBenton county line near Belle Plaine Iowa 21 near Belle Plaine01981-01-01198102003-01-012003
Iowa 941 2.99 [7] 4.81County Road J18 in Moravia Iowa 5 near Moravia01976-01-01197601980-01-011980Former section of Iowa 5
Iowa 941 6.38 [12] 10.27 US 30  / US 218 in Cedar Rapids US 30  / US 218 in Cedar Rapids01981-01-01198101987-01-011987Former section of US 30/US 218 concurrency
Iowa 941 1.12 [17] 1.805th Avenue Southwest in Epworth Bierman Road in Epworth01988-01-01198801990-01-011990Former section of US 20
Iowa 941 12.95320.846 I-35 near Williams Iowa Falls city limits01991-01-01199102003-01-012003Former section of US 20
Iowa 942 5.70 [7] 9.17 Iowa 5 near MoraviaCounty Road J18 in Moravia 01976-01-01197601980-01-011980Former section of Iowa 5; had another section south of Albia
Iowa 942 0.4660.750Vine Street in Woodburn Woodburn city limits01980-01-01198002003-01-012003Former section of Iowa 104
Iowa 943 0.69 [7] 1.1101974-01-01197401980-01-011980Former section of Iowa 13 in Central City
Iowa 943 0.43 [20] 0.691st Street in Galva Galva city limits01980-01-01198001987-01-011987Former section of Iowa 328
Iowa 943 0.48 [17] 0.7701988-01-01198801990-01-011990Former Iowa 12 ramp in Sioux City; road destroyed 1990s
Iowa 943 1.82 [36] 2.93 US 63 in Denver US 63 in Denver01994-01-01199401995-01-011995Former section of US 63
Iowa 944 0.99 [7] 1.59 Iowa 13 in Manchester Iowa 13 in Manchester01976-01-01197601980-01-011980Former section of Iowa 13
Iowa 944 0.5530.890 US 61  / Iowa 2 in Fort Madison Fort Madison city limits01980-01-01198002003-01-012003Former section of Iowa 88
Circle sign 945.svg Iowa 945 4.5997.401 I-80 near Altoona Iowa 931 in Polk County 01980-01-01198002003-01-012003
Iowa 946 2.72 [7] 4.38 Luana city limits US 18  / US 52 in Monona 01976-01-01197601980-01-011980Former section of US 18/US 52 concurrency; had two sections separated by the city limits of Monona
Iowa 946 0.07 [17] 0.11 US 218 in St. Ansgar Park Street in St. Ansgar01988-01-01198801989-01-011989Former section of US 218
Iowa 946 0.9271.492 US 52  / US 61  / US 151 in Dubuque US 52  / US 61  / US 151 in Dubuque01991-01-011991currentProvides direct access between US 20 and US 52 / US 61  / US 151
Iowa 947 23.75 [7] 38.22 Iowa 187 Dyersville city limits01976-01-01197601981-01-011981Former section of US 20
Iowa 947 0.45 [12] 0.72 Zearing city limitsPearl Street in Zearing01981-01-01198101986-01-011986Former section of Iowa 317
Iowa 947 4.74 [12] 7.63 Iowa 57 in Cedar Falls Greenhill Road in Waterloo 01989-01-01198901992-01-011992Former section of US 218
Iowa 947 2.47 [9] 3.98 Iowa 70 in Columbus Junction Market Street in Columbus City 01994-01-01199402003-01-012003Former section of Iowa 70; only the 0.671 miles in Columbus City were left on December 1, 1997
Iowa 948 5.08 [20] 8.18 DeWitt city limits US 30 near DeWitt01975-01-01197501987-01-011987Former section of US 30
Iowa 948 .30 [37] 0.48 US 61  / US 151 in Dubuque Iowa 959 in Dubuque 01992-01-01199201993-01-011993Former section of US 61/US 151 concurrency
Iowa 949 2.2753.661 Glenwood city limits US 34  / US 275 near Glenwood01974-01-01197402003-02-182003Formerly US 34 Business
Iowa 950 3.45 [37] 5.55 US 6  / US 65 in Altoona iowa 163 in Pleasant Hill 01980-01-01198001994-01-011994Now 34th Avenue/56th Street
Iowa 951 2.65 [7] 4.26 US 34 west of Osceola US 34 near Osceola01976-01-01197601980-01-011980Former section of US 34
Iowa 951 3.15 [37] 5.07 Carbon city limits Iowa 148 01983-01-01198301993-01-011993Former Section of Iowa 95
Iowa 952 1.82.9 US 61 in Burlington Central avenue in Burlington 01976-01-01197601976-01-011976Former section of US 34
Iowa 952 0.18 [14] 0.2901978-01-01197801982-01-011982Former section of US 67 north of Clinton
Iowa 952 0.1120.180 US 151 near Cascade Reiter Road near Cascade01992-01-01199202003-01-012003Former section of US 151
Iowa 953 0.89 [7] 1.43 Iowa 38 near Muscatine Iowa 38 in Muscatine01976-01-01197601980-01-011980Former section of Iowa 38
Iowa 953 0.08 [37] 0.13 Iowa 149 in North English Dead end in North English01988-01-01198801994-01-011994Former section of Iowa 149
Iowa 953 1.0 [37] 1.6 Iowa 5 in West Des Moines Browns Woods Road in West Des Moines01995-01-01199501996-01-011996Former section of Iowa 28
Iowa 954 0.7731.244 US 61 near Maquoketa Maquoketa city limits01967-01-01196702003-01-012003Former section of US 61; numbered 1976
Iowa 955 0.7271.170 US 61 near Key West Iowa 963 (Military Road) in Key West01971-01-01197102003-01-012003Former section of US 61
Iowa 956 16.77626.998CR F55 at Davenport US 61 north of DeWitt 01976-01-01197602003-01-012003Former section of US 61
Iowa 957 3.33 [24] 5.36 US 63 near Bloomfield US 63 near Bloomfield01976-01-01197601977-01-011977Former section of US 63
Iowa 957 0.0620.10001988-01-01198802003-01-012003Former section of Iowa 22
Iowa 958 1.6102.591 Ottumwa city limits US 63 south of Ottumwa01965-01-01196502003-01-012003Former section of US 63
Iowa 959 1.27 [7] 2.04 US 65  / US 69 in Des Moines Des Moines city limits01970-01-01197001981-01-011981Former section of US 65/US 69 concurrency
Iowa 959 1.29 [37] 2.08 US 61  / US 151 in Dubuque US 61  / US 151 & US 52 in Dubuque01992-01-01199201993-01-011993Former section of US 61/US 151 concurrency
Iowa 960 1.58 [7] 2.54 Clarinda city limits Iowa 2 near Clarinda01973-01-01197301982-01-011982Former section of Iowa 2
Iowa 960 1.11 [12] 1.7901982-01-01198201986-01-011986Former section of US 61
Iowa 960 4.77.601993-01-01199301994-01-011994Former section of US 61/US 218 concurrency north of Keokuk
Iowa 960 1.0161.635US 75 Business/Iowa 404 in Le Mars Dead end in Le Mars02006-01-01200602007-01-012007Former section of Iowa 60
Iowa 961 0.56 [7] 0.90 Villisca city limits US 71 near Villisca01976-01-01197601980-01-011980Former section of US 71
Iowa 961 1.08 [37] 1.74 US 61  / US 151 in Dubuque US 20 in Dubuque (southbound), Iowa 946 in Dubuque (northbound)01991-01-01199101993-01-011993Former section of US 151 and US 61
Iowa 961 0.50 [36] 0.8001994-01-01199401996-01-011996Former section of US 61 in Wever
Iowa 961 3.6135.815 Iowa 2 in Fort Madison US 61 at Fort Madison02011-01-01201102013-01-012013Section of US 61 Business in Fort Madison
Iowa 962 0.11 [9] 0.18 US 218 near Ainsworth County Road W64 near Ainsworth01994-01-01199401997-01-011997Former section of US 218
Iowa 963 4.1396.661 US 151 near Key West US 61  / US 151 in Dubuque 01971-01-01197102003-01-012003Former section of US 151 and US 61
Iowa 964 4.704 [9] 7.570 Iowa 92 near Knoxville Iowa 92 near Knoxville01977-01-01197701996-01-011996Former section of Iowa 92
Iowa 965 3.29 [7] 5.2901976-01-01197601980-01-011980Former section of US 52
Iowa 965 0.5190.835 US 6 in Coralville I-80 in Coralville01985-01-011985currentFormer section of US 218; extended to Cedar Rapids until 2003
Iowa 966 4.897.87 Centralia US 20 01976-01-01197601996-01-011996Former Iowa 416, and before that, was a section of US 20
Iowa 967 0.0370.060 US 20 near Farley Farley city limits01976-01-01197602003-01-012003Former Iowa 418, and before that, was a section of US 20
Iowa 968 2.37 [17] 3.81 Iowa 136 in Dyersville US 20 01976-01-01197601989-01-011989Former Iowa 420, and before that, was a section of US 20
Iowa 968 5.36 [36] 8.63 Iowa 163 in Pella Iowa 163 in Pella01993-01-01199301994-01-011994Former section of Iowa 163
Iowa 969 0.52 [7] 0.84 US 169 near Burt Burt 01976-01-01197601980-01-011980Spur route; former Iowa 422
Iowa 969 4.06.4 US 218 near Janesville US 218 near Janesville01993-01-01199301994-01-011994Former section of US 218
Iowa 970 31.79 [7] 51.16Business US 75 in Sioux City Iowa 175 in Onawa 01976-01-01197602003-01-012003Former section of US 75
Iowa 971 10.78 [7] 17.35 Iowa 2 US 59 in Shenandoah 01975-01-01197501979-01-011979Former section of Iowa 2
Iowa 971 1.802 [25] 2.900 US 69 in Lake Mills Winnebago–Worth county line01993-01-01199302003-01-012003Former section of Iowa 105; only 0.777 miles in Lake Mills were left in 2002
Iowa 972 2.003.22 US 218 Mount Pleasant city limits01969-01-01196901974-01-011974Former section of US 218; renumbered Iowa 976 to avoid confusion with the other Iowa 972
Iowa 972 2.7724.461 I-29  / US 34 near Glenwood Iowa 385 near Pacific Junction 01974-01-01197401974-01-011974Former section of US 34; renumbered Iowa 978 to avoid confusion with the other Iowa 972
Iowa 972 10.17 [7] 16.37 Iowa 92  / US 169 in Winterset US 169 01974-01-01197401980-01-011980Former section of US 169
Iowa 972 1.8773.021 Northwood city limitsNorthwood city limits01993-01-01199302003-01-012003Former section of Iowa 105
Iowa 973 1.95 [13] 3.14 I-29 in Council Bluffs US 6 in Council Bluffs 01969-01-01196901971-01-011971Former section of US 75
Iowa 973 10.32 [22] 16.61 US 71 near Atlantic Iowa 148 in Anita 01972-01-01197201973-01-011973Former section of US 6; became part of an extended Iowa 83
Iowa 973 1.49 [7] 2.40 Iowa 92 in Winterset Iowa 972 in Winterset01976-01-01197601980-01-011980Former section of Iowa 92
Iowa 973 0.651.05 St. Ansgar city limits US 218 in St. Ansgar01993-01-01199302001-01-012001Former section of Iowa 105
Iowa 974 5.09 [7] 8.19O'Connor Road northwest of Mount Vernon Mount Vernon city limits01965-01-01196501980-01-011980Former section of Iowa 150
Iowa 975 1.33 [18] 2.14North city limits of Marengo CR F15 north of Marengo01964-01-01196401974-01-011974Former section of Iowa 411
Iowa 975 1.55 [12] 2.49 Iowa 964 in Knoxville Iowa 5  / Iowa 92 in Knoxville01978-01-01197801986-01-011986Former section of Iowa 5/Iowa 92 concurrency
Iowa 975 0.130.2101995-01-01199501995-01-011995Former section of US 275/Iowa 333 concurrency east of Hamburg
Iowa 976 2.00 [18] 3.22 US 218 Mount Pleasant city limits01974-01-01197401980-01-011980Former section of US 218; formerly Iowa 972
Iowa 976 0.220.35 Marshalltown city limitsGovernor Road east of Marshalltown01996-01-01199601997-01-011997Former section of US 30
Iowa 976 0.8791.41501997-01-01199702003-01-012003Former section of US 30
Iowa 977 2.0073.230 US 59 in Cherokee Iowa 3 near Cherokee01962-01-01196202003-01-012003Former section of Iowa 3
Iowa 978 2.77 [19] 4.46 Iowa 44 in Whittemore Iowa 358 in Whittemore 01962-01-01196201965-01-011965Former section of Iowa 358
Iowa 978 2.7724.461 I-29  / US 34 near Glenwood Iowa 385 near Pacific Junction 01974-01-01197402003-02-182003Former section of US 34; formerly Iowa 972
Iowa 979 19.80 [13] 31.87 Iowa City limits Iowa 38 01961-01-01196102003-01-012003Former section of Iowa 1
Iowa 980 0.77 [7] 1.24 US 34 near Ottumwa Ottumwa city limits01967-01-01196701980-01-011980Former section of US 34; formerly US 34 Alternate
Iowa 981 0.44 [7] 0.71 Iowa 150 near Fayette Fayette city limits01967-01-01196701980-01-011980Former section of Iowa 150; formerly Iowa 991
Iowa 981 0.20.32 US 34 (later Iowa 340) in Batavia US 34 (later Iowa 340) in Batavia01995-01-01199501996-01-011996Former section of US 34
Iowa 982 0.30 [19] 0.48Dubuque–Jones County Line Iowa 136 near Cascade 01961-01-01196101965-01-011965Former section of Iowa 136
Iowa 982 27.78744.719 Smithland city limits Sioux City city limits01967-01-01196702003-01-012003Former section of Iowa 141; formerly Iowa 994
Iowa 983 0.99 [19] 1.59 Iowa 989 US 34  / Iowa 213 01961-01-01196101964-01-011964Former section of Iowa 213
Iowa 983 0.81 [7] 1.30 US 34 west of Chariton US 34 east of Chariton01967-01-01196701980-01-011980Former section of US 34; formerly Iowa 995 and Iowa 996; had a gap through Chariton
Iowa 983 0.20.32Market Street in Carlisle Dead end in Carlisle 01998-01-01199801998-01-011998Former section of Iowa 5
Iowa 984 2.24 [15] 3.60 Bettendorf city limits US 67 in Le Claire 01968-01-01196801982-01-011982Former section of Iowa 417
Iowa 985 1.00 [19] 1.61 US 63 north of Oskaloosa US 63 north of Oskaloosa01961-01-01196101965-01-011965Former section of US 63; decommissioned by 1965
Iowa 985 7.66 [22] 12.33 Sioux City limits I-29 in Sioux City01969-01-01196901973-01-011973Former section of Iowa 7
Iowa 985 1.9273.101 US 52 near Bellevue State Park US 52 near Bellevue 01980-01-01198002003-01-012003Park access road; former section of US 52
Iowa 986 4.86 [12] 7.82Harrison–Monona county line Iowa 301 in River Sioux 01968-01-01196801986-01-011986Former section of US 75
Iowa 987 4.45 [19] 7.16 US 63  / Iowa 412 in Waterloo Hudson city limits01961-01-01196101964-01-011964Former section of US 63
Iowa 988 0.16 [19] 0.26 Iowa 58 near Hudson Hudson city limits01961-01-01196101964-01-011964Former section of US 63
Circle sign 988.svg Iowa 988 2.3123.721 I-29  / I-680 near Crescent Iowa 183 in Crescent01975-01-01197502003-01-012003
Iowa 989 17.76 [19] 28.58 Albia city limits US 34 near Ottumwa 01961-01-01196101964-01-011964Former section of US 34
Iowa 990 0.27 [19] 0.43 Iowa 150 near Fayette Fayette city limits01961-01-01196101965-01-011965Former section of Iowa 150
Iowa 991 0.44 [5] 0.71 Fayette city limits Iowa 150 near Fayette01961-01-01196101967-01-011967Former section of Iowa 150; renumbered Iowa 981
Iowa 992 8.81 [19] 14.18 Wesley city limits Britt city limits01961-01-01196101965-01-011965Former section of US 18
Iowa 993 3.52 [19] 5.66 US 18 near Wesley Wesley city limits01961-01-01196101965-01-011965Former section of US 18
Iowa 994 27.787 [5] 44.719 Smithland city limits Sioux City city limits01961-01-01196101967-01-011967Former section of Iowa 141; renumbered Iowa 982
Iowa 995 0.56 [5] 0.90 US 34 west of Chariton Chariton city limits01961-01-01196101967-01-011967Former section of US 34; renumbered Iowa 983
Iowa 996 0.23 [18] 0.37 Chariton city limits US 34 east of Chariton01961-01-01196101976-01-011976Former section of US 34; became a second section of Iowa 983
Iowa 997 0.89 [11] 1.43 US 169  / Iowa 5 near Fort Dodge Fort Dodge city limits01961-01-01196101970-01-011970Former section of Iowa 5 (now Iowa 7)
Iowa 998 0.67 [37] 1.08 US 61 near Montrose Dead end in Montrose01961-01-01196101994-01-011994Former section of US 61; renumbered Iowa 924
Iowa 999 2.22 [7] 3.57Spruce Street in College Springs Iowa 333 near College Springs01961-01-01196101980-01-011980Former section of Iowa 333
  •       Former

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<span class="mw-page-title-main">Iowa Highway 150</span> State highway in Iowa, United States

Iowa Highway 150 (Iowa 150) is an 85-mile-long (137 km) state highway in eastern and northeastern Iowa. It begins at U.S. Route 218 (US 218) in Vinton and ends at US 52 and Iowa 24 in Calmar. From Vinton, it heads north and east towards Urbana where it meets Interstate 380 (I-380) and Iowa 27, the Avenue of the Saints highway. At Independence, it intersects US 20 on the south side of town. Further north, it converges with Iowa 3 in Oelwein.

<span class="mw-page-title-main">Iowa Highway 182</span> State highway in Iowa

Iowa Highway 182 (Iowa 182) is a 9-mile-long (14 km) state highway in the northwestern corner of Iowa. It begins at U.S. Highway 18 (US 18) in Inwood and ends at Iowa 9 southeast of Larchwood. The highway has been in the primary highway system since 1930, when it was known as Iowa 26. On January 1, 1969, Iowa 26 and Iowa 182 swapped designations.

<span class="mw-page-title-main">Iowa Highway 187</span> State highway in Iowa, United States

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<span class="mw-page-title-main">Iowa Highway 340</span> Former state highway in Iowa, United States

Iowa Highway 340 connected U.S. Highway 18 Business in McGregor to Pikes Peak State Park. It was designated in 1936 to connect Pikes Peak State Park to the primary highway system, which it did until it was turned over to Clayton County in 2003. It was turned over along with 700 miles (1,100 km) of other short highways that primarily served local traffic. It was mostly replaced by County Road X56. Aside from a short connector to the state park gate, the route was a part of the Great River Road.

On January 1, 1969, the Iowa State Highway Commission, now known as the Iowa Department of Transportation, renumbered several state highways. The changes to the highway system fixed a number of issues: creating continuous route numbers across state lines, removing duplicate route numbers where they were unnecessary, and extending route numbers in some locations. Twenty-six sections of highway were assigned new route numbers, duplicate route numbers were removed on eleven sections, and one route number was extended to another section.

<span class="mw-page-title-main">Iowa Primary Highway System</span>

The primary highway system makes up over 9,000 miles (14,000 km), approximately 8 percent of the U.S. state of Iowa's public road system. The Iowa Department of Transportation is responsible for the day-to-day maintenance of the primary highway system, which consists of Interstate Highways, United States Highways, and Iowa state highways. Currently, the longest primary highway is U.S. Highway 30 at 332 miles (534 km). The shortest highway is Interstate 129 at 0.27 miles (430 m).

<span class="mw-page-title-main">U.S. Route 61 in Iowa</span> U.S. Highway in Iowa

U.S. Highway 61 (US 61) is a United States Highway that serves eastern Iowa. It enters the state from Missouri near Keokuk with US 136. North of Keokuk, it is overlapped by US 218 for a few miles. It the follows the course of the Mississippi River past Montrose and Fort Madison. It meets US 34 at Burlington. It passes through Wapello and bypasses Muscatine and Blue Grass on its way toward Davenport. There, it follows Interstate 280 (I-280) and I-80 around the Quad Cities. North of Davenport, it follows a freeway north toward DeWitt where it meets US 30. The highway continues north through Maquoketa and reaches the Dubuque area. There it is joined by US 151 and briefly by US 52. The two highways enter the downtown area on an expressway. Due to the proximity of the Mississippi River and railroad tracks that lie between, the routes have an indirect junction with US 20. The two highways leave the state and enter Wisconsin about one-half mile (800 m) north of the Illinois–Wisconsin state line.

<span class="mw-page-title-main">U.S. Route 77 in Iowa</span> Highway in Iowa, United States

U.S. Highway 77 (US 77) is the shortest U.S. Highway in the state of Iowa. It crosses into Iowa over the Missouri River from South Sioux City, Nebraska, at Sioux City and runs approximately three-tenths mile (500 m) to an interchange with Interstate 29 where the road continues north as Wesley Parkway. Like all other state highways in Iowa, the route is maintained by the Iowa Department of Transportation.

<span class="mw-page-title-main">Iowa Highway 15 (Van Buren County)</span> State highway in Iowa, United States

Iowa Highway 15 (Iowa 15) was a short state highway in Van Buren County. It ran from the Missouri state line, where it connected to Route 15 to Iowa 2 in Milton. The highway was designated on January 1, 1969, when the Iowa State Highway Commission renumbered several state highways in order to match up with adjoining highways in neighboring states. The route ceased to exist on July 1, 2003, when the Iowa Department of Transportation turned over 700 miles (1,100 km) of state highways that mostly served local traffic. While it was in service, there were two Iowa 15s in the state; the other was significantly longer and located in the northern part of the state thus avoiding confusion between the two routes.

<span class="mw-page-title-main">Iowa Highway 99</span> Former state highway in Iowa, United States

Iowa Highway 99 (Iowa 99) was a state highway in southeastern Iowa. It began in downtown Burlington and generally followed the course of the Mississippi River north to Wapello. Most of the route was a part of the Great River Road. The highway was designated in 1931 and its course remained unchanged until it was removed from the primary highway system in 2003. It was replaced by County Road X99, though around Burlington, it is sometimes referred to as County Road 99.

<span class="mw-page-title-main">Interstate 880 (Iowa)</span> Auxiliary Interstate Highway in Iowa

Interstate 880 (I-880) is an auxiliary Interstate Highway in Iowa. Its route was created in 2019 from a section of I-680 in order to facilitate the movement of I-29 traffic around Council Bluffs in the event of Missouri River flooding. It follows the same routing as Interstate 80N (I-80N), which originally connected I-29 and I-80 from 1966 to 1973.

<span class="mw-page-title-main">Iowa Highway 7 (1957–1968)</span> State highway in Iowa, United States

Iowa Highway 7 was a state highway that existed from 1957 to 1968. It began at the interchange between Interstate 29 (I-29), U.S. Highway 20, and U.S. Highway 77 in Sioux City and traveled north to end at Iowa 3 west of Le Mars. The route of Iowa 7 was an original primary road in 1920, but then it was known as Primary Road No. 29 and later Iowa 29. When I-29 was designated to come through Iowa in the 1950s, Iowa 29 was renumbered Iowa 7. Through Sioux City, the highway was well traveled, especially near I-29 and the downtown area; the inverse was true at the rural northern end. Subsequently, Iowa 7 was removed from the primary highway system in 1968.

References

  1. 2012 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2012. Retrieved November 6, 2013.
  2. 2002 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2002. Retrieved September 3, 2019.
  3. 1 2 3 4 5 6 7 8 "U.S. Road Markers Soon to Replace Familiar Primary Road Signs on U.S. System in Iowa". Service Bulletin Oct–Nov–Dec 1925. XIII (10–11–12). Iowa State Highway Commission: 3. 1925.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 1938 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. September 26, 1938. Retrieved September 13, 2019.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 1965 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. June 1966. Retrieved September 13, 2019.
  6. 1 2 3 4 5 6 7 8 9 10 1956 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. May 1957. Retrieved September 14, 2019.
  7. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1978 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1978. Retrieved September 13, 2019.
  8. 1 2 3 4 5 6 7 8 9 1941 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. April 30, 1942. Retrieved September 14, 2019.
  9. 1 2 3 4 5 6 7 8 1996 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 1997. Retrieved September 3, 2019.
  10. 1 2 3 4 5 6 7 8 9 10 11 1934 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. March 25, 1935. Retrieved September 13, 2019.
  11. 1 2 3 4 5 6 7 8 1968 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. March 1970. Retrieved September 13, 2019.
  12. 1 2 3 4 5 6 7 8 9 10 11 12 13 1984 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 1985. Retrieved September 3, 2019.
  13. 1 2 3 4 5 6 7 8 9 10 1970 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. July 1971. Retrieved September 13, 2019.
  14. 1 2 3 4 1982 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1982. Retrieved September 3, 2019.
  15. 1 2 3 4 5 6 7 8 9 1980 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1980. Retrieved September 13, 2019.
  16. 1 2 3 4 5 6 7 8 9 10 11 12 13 1959 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. June 1960. Retrieved September 14, 2019.
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  18. 1 2 3 4 5 6 7 8 1974 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. May 1, 1976. Retrieved September 13, 2019.
  19. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1962 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. May 1963. Retrieved September 13, 2019.
  20. 1 2 3 4 5 6 1986 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. 1987. Retrieved September 3, 2019.
  21. 1 2 3 4 1953 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. August 1954. Retrieved September 14, 2019.
  22. 1 2 3 4 5 6 7 1972 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. April 1973. Retrieved September 13, 2019.
  23. 1 2 1951 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. January 1, 1951. Retrieved September 14, 2019.
  24. 1 2 3 4 1976 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1976. Retrieved September 12, 2019.
  25. 1 2 3 4 5 6 7 8 9 2000 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 2001. Retrieved September 3, 2019.
  26. 1 2 3 4 1990 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. 1991. Retrieved September 3, 2019.
  27. 1 2 3 4 2006 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2006. Retrieved September 3, 2019.
  28. 2003 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2003. Retrieved September 3, 2019.
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  30. "Primary Route Descriptions – Unsigned Iowa 374 in Jasper County". Iowa Department of Transportation. Retrieved September 3, 2019.
  31. 1949 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. January 1951. Retrieved September 14, 2019.
  32. 2004 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2004. Retrieved September 3, 2019.
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  34. "Primary Route Descriptions – Iowa 475 in Monona County". Iowa Department of Transportation. Retrieved September 3, 2019.
  35. "Official Description Change: Unsigned Iowa 915, Polk County". Iowa Department of Transportation. July 24, 1996.
  36. 1 2 3 4 5 1994 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 1995. Retrieved September 3, 2019.
  37. 1 2 3 4 5 6 7 8 9 1992 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. 1993. Retrieved September 7, 2019.