List of numbered routes in Delaware

Last updated

Delaware State Route System
I-95.svg
US 13.svg
Elongated circle 1.svg
Standard route shields
Delaware highway system map.svg
Highway names
Interstates Interstate X (I-X)
US Highways U.S. Route X (US X)
State Delaware Route X (DE X)
System links

The following is a list of numbered routes in Delaware, consisting of Interstate Highways, U.S. Routes, and state routes. The Delaware Department of Transportation is responsible for maintaining numbered roads in Delaware. State routes in Delaware use the circular highway shield. Delaware's numbering system mirrors that of U.S. Highways in that odd numbered highways travel north-south and even numbered routes go east-west. The numbers increase in value as one goes south and west respectively. There are some exceptions, however, mainly with routes from other states keeping their number as they enter Delaware, hence breaking the pattern.

Contents

History

The first numbered routes in Delaware came in 1925 with the designation of the U.S. Highway System, in which US 13, US 40, and US 113 were legislated to run through the state. [1] In 1930 and again in 1932, the Delaware State Highway Department recommended giving numbers to state roads to supplement the existing U.S. Highway System. [2] [3] By 1936, Delaware began assigning numbers to state routes. [4] In 1956, the Interstate Highway System was created, with under 40 miles of Interstate highway legislated in New Castle County. [5]

Interstate Highways

NumberLength (mi) [6] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
I-95.svg I-95 23.4337.71 I-95 at Maryland border near Newark I-95 at Pennsylvania border near Claymont 01956-01-011956 [7] current
I-295.svg I-295 5.719.19 I-95  / I-495  / US 202 at Newport I-295  / US 40 at New Jersey border near Wilmington Manor 01959-01-011959 [8] current
I-495.svg I-495 11.4718.46 I-95  / I-295  / US 202 at Newport I-95  / DE 92 at Claymont 01962-01-011962 [9] currentI-95 was routed along I-495 from 1979-1980 during a major reconstruction.
I-895.svg I-895 10.7817.35 I-95 at Newport I-95 at Claymont 01979-01-011979 [10] 01980-01-011980 [11] Temporary designation for I-95 through Wilmington during a major reconstruction
  •       Former
  •       Proposed and unbuilt

U.S. Highways

Mainline routes

NumberLength (mi) [6] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
US 9.svg US 9 31.0449.95 US 13 at Laurel Cape May–Lewes Ferry at Lewes 01974-01-011974 [12] [13] currentReplaced DE 28 between Laurel and Georgetown and DE 18 between Georgetown and Five Points
US 13.svg US 13 103.33166.29 US 13 at Maryland border at Delmar US 13 at Pennsylvania border near Claymont 01926-01-011926 [14] current
US 40.svg US 40 17.1827.65 US 40 at Maryland border near Glasgow I-295  / US 40 at New Jersey border near Wilmington Manor 01926-01-011926 [14] current
US 113.svg US 113 37.2659.96 US 113 at Maryland border at Selbyville DE 1 near Milford 01926-01-011926 [14] currentRoute truncated from Dover to Milford in 2004
US 122 (1926).svg US 122 6.159.90 US 13 at Wilmington US 122 at Pennsylvania border near Brandywine 01926-01-011926 [14] 01934-01-011934 [4] [15] Replaced by US 202
US 202.svg US 202 12.6520.36 US 13  / US 40  / DE 141 near New Castle Airport US 202 at Pennsylvania border near Brandywine 01934-01-011934 [4] [15] currentReplaced US 122
US 301.svg US 301 11.2918.17 US 301 at Maryland border near Warwick, MD DE 1 at Biddles Corner 01959-01-011959 [8] currentFour-lane freeway that is tolled.
US 301N.svg US 301N 11.218.0 US 301  / DE 71  / DE 896 at Summit Bridge US 13  / US 40  / US 301 at State Road 01959-01-011959 [8] 01983-01-011983 [16]
US 301S.svg US 301S 10.6917.20 US 301  / DE 71  / DE 896 at Summit Bridge US 13  / US 40  / US 301 at State Road 01959-01-011959 [8] 01983-01-011983 [16]
  •       Former
  •       Proposed and unbuilt

Special routes

NumberLength (mi) [6] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
Business plate.svg
US 9.svg US 9 Bus.
3.365.41 US 9  / DE 1  / DE 404 at Nassau US 9 at Lewes 01974-01-011974 [13] currentReplaced DE 18
Truck plate.svg
US 9.svg US 9 Truck
6.19.8 US 9  / US 113  / DE 404 Truck at Georgetown US 9  / DE 404 near Georgetown 01983-01-011983 [17] [18] current
Alt plate 1948.svg
US 13 (1948).svg US 13 Alt.
16.6726.83 MD 455 at Delmar US 13 near Seaford 01954-01-011954 [19] 01957-01-011957 [20] Former alignment of US 13
Alt plate 1961.svg
US 13 (1961).svg US 13 Alt.
2.463.96 US 13  / DE 404 at Bridgeville US 13 at Bridgeville 01957-01-011957 [20] 01970-01-011970 [21] Former alignment of US 13. Replaced by US 13 Bus.
Alt plate.svg
US 13.svg US 13 Alt.
5.699.16 US 13  / DE 15 near Canterbury US 13 at Camden 01954-01-011954 [19] currentFormer alignment of US 13
Alt plate.svg
US 13.svg US 13 Alt.
3.866.21 US 13 at Rodney Village US 13 at Dover 01959-01-011959 [8] currentFormer alignment of US 13
Alt plate 1961.svg
US 13 (1961).svg US 13 Alt.
8.7014.00 US 13  / US 202 at Wilmington US 13 at Claymont 01939-01-011939 [22] 01970-01-011970 [21] Replaced by US 13
Business plate.svg
US 13.svg US 13 Bus.
2.463.96 US 13  / DE 404  / DE 404 Bus. at Bridgeville US 13  / DE 404 at Bridgeville 01970-01-011970 [21] currentFormer alignment of US 13 and US 13 Alt.
Business plate.svg
US 13.svg US 13 Bus.
8.1913.18 I-495  / US 13 at Wilmington US 13 at Claymont 01970-01-011970 [21] currentFormer alignment of US 13.
By-pass plate 1961.svg
US 13 (1961).svg US 13 Byp.
8.1913.18 US 13 near Claymont US 13 Byp. at Pennsylvania border near Claymont 01950-01-01c.1950 [23] 01970-01-01c.1970 [24]
No image.svgAlt plate.svgNo image.svg
US 113.svg US 113 Alt.
9.1014.65 US 113  / DE 1 at Little Heaven US 13  / US 113 at Dover 01936-01-011936 [4] 02004-01-012004 [25] Former alignment of US 113 south of Dover
No image.svgTruck plate.svgNo image.svg
US 301.svg US 301 Truck
9.1014.65 US 301  / DE 71  / DE 896 at Mount Pleasant US 13  / US 40  / US 301 at State Road 02001-01-012001
  •       Former

State routes

NumberLength (mi) [6] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
Elongated circle 1.svg DE 1 102.63165.17 MD 528 at Fenwick Island I-95  / DE 7 at Christiana 01974-01-011974 [26] currentLongest state route, extended past Milford in 1991, previously used alignment of US-13 between gaps in expressway north of Dover between 1991 and 2003
Elongated circle 1A.svg DE 1A 2.013.23 DE 1 at Dewey Beach DE 1 at Rehoboth Beach 01974-01-011974 [26] currentFormer DE 14A
Elongated circle 1B.svg DE 1B 0.751.21 DE 1 at Rehoboth Beach DE 1A at Rehoboth Beach 01974-01-011974 [26] current
Elongated circle 1D.svg DE 1D 3.926.31 DE 1  / DE 24 at Midway DE 23 at Nassau 01996-01-011996 [27] current
Business plate.svg
Elongated circle 1.svg DE 1 Bus.
3.906.28 DE 1 near Milford US 113  / DE 1 near Milford 01977-01-011977 [28] current
Elongated circle 2.svg DE 2 10.8117.40 DE 72  / DE 273 near Newark DE 52 at Wilmington 01936-01-011936 [4] currentUntil 2013, continued west along DE-72, DE-4, and DE-279 to the Maryland line
Business plate.svg
Elongated circle 2.svg DE 2 Bus.
2.914.68 DE 2  / DE 4  / DE 896 at Newark DE 2  / DE 72  / DE 273 at Newark 01990-01-011990 [29] 02013-01-012013 [30]
Elongated circle 3.svg DE 3 6.159.90 I-495 at Edgemoor DE 92 at Hanbys Corner 01968-01-011968 [31] current
Elongated circle 4.svg DE 4 14.0822.66 DE 279  / DE 896 at Newark DE 48 at Wilmington 01967-01-011967 [32] current
Delaware 4 1955.svg DE 4 8.0813.00 MD 299 near Warwick, MD US 13 at Odessa 01938-01-011938 [33] 01957-01-011957 [19] [20] Replaced by DE 299
Elongated circle 5.svg DE 5 19.4931.37River Road at Oak Orchard DE 1 near Milton 01938-01-011938 [33] current
Alt plate.svg
Elongated circle 5.svg DE 5 Alt.
3.86.1 DE 5 near Milton DE 5  / DE 16 near Milton 01998-01-011998 [34] current
Elongated circle 6.svg DE 6 17.3827.97 MD 291 near Blackiston Delaware Avenue at Woodland Beach 01936-01-011936 [4] current
Elongated circle 7.svg DE 7 16.8727.15 US 13  / DE 72 in Wrangle Hill SR 3013 at Pennsylvania state line near Hockessin 01936-01-011936 [4] current
Elongated circle 8.svg DE 8 17.1527.60 MD 454 at Marydel DE 9 near Little Creek 01936-01-011936 [4] current
Elongated circle 9.svg DE 9 57.8393.07 DE 1 near Dover Air Force Base DE 2 at Wilmington 01936-01-011936 [4] current
Elongated circle 9A.svg DE 9A 2.03.2 DE 9 at Wilmington US 13  / DE 9 at Wilmington 01971-01-011971 [35] currentOfficial length is 0.78 miles (1.26 km) between DE 9 and Christiana Avenue
Truck plate.svg
Elongated circle 9.svg DE 9 Truck
5.79.2 DE 9 near Tybouts Corner DE 9  / DE 141  / DE 273 at New Castle
Elongated circle 10.svg DE 10 16.1225.94 MD 287 at Sandtown DE 1 at Dover Air Force Base 01936-01-011936 [4] current
Alt plate.svg
Elongated circle 10.svg DE 10 Alt.
9.2314.85 DE 10 at Willow Grove DE 10 at Highland Acres 01988-01-011988 [36] current
Elongated circle 11.svg DE 11 6.9311.15 MD 302 near Templeville, MD DE 300 near Kenton 01936-01-011936 [4] current
Elongated circle 12.svg DE 12 16.3526.31 MD 314 in Whiteleysburg DE 1 near Frederica 01936-01-011936 [4] current
Elongated circle 14.svg DE 14 19.4731.33 MD 317 near Burrsville, MD DE 1 near Milford 01936-01-011936 [4] currentRoute truncated from Fenwick Island to Milford in 1977 and replaced with DE 1
Circle sign 14A.svg DE 14A 2.013.23 DE 14 at Dewey Beach DE 14 at Rehoboth Beach 01966-01-011966 [37] 01977-01-011977 [28] Renumbered DE 1A
Truck plate.svg
Elongated circle 14.svg DE 14 Truck
3.96.3 DE 14 at Harrington US 13  / DE 14 at Harrington 02008-01-012008 [38] [39] current
Elongated circle 15.svg DE 15 57.0591.81 DE 14 near Milford DE 71  / DE 896 at Summit Bridge 01984-01-011984 [17] current
Elongated circle 16.svg DE 16 30.3148.78 MD 16 near Hickman Road end at Broadkill Beach 01936-01-011936 [4] current
Elongated circle 17.svg DE 17 8.3013.36 DE 54 at Selbyville DE 26 near Millville 01938-01-011938 [33] current
Elongated circle 18.svg DE 18 19.3531.14 MD 318 near Federalsburg, MD US 9  / DE 404 at Georgetown 01936-01-011936 [4] currentRoute truncated from Lewes to Georgetown in 1974 and replaced with US 9 and US 9 Bus.
Elongated circle 20.svg DE 20 40.2964.84 MD 392 at Reliance DE 54 near Fenwick Island 01936-01-011936 [4] current
Delaware 22 1926.svg DE 22 21.3934.42 Long Neck DE 14 near Milton 01936-01-011936 [40] 01938-01-011938 [33] Replaced by DE 5 between DE 24 and DE 14
Elongated circle 23.svg DE 23 15.6325.15Road end at Long Neck US 9  / DE 404 at Nassau 01994-01-011994 [41] current
Elongated circle 24.svg DE 24 40.4265.05 MD 348 near Sharptown, MD DE 1 at Midway 01936-01-011936 [4] current
Alt plate.svg
Elongated circle 24.svg DE 24 Alt.
17.828.6 US 113 at Stockley DE 24 at Midway 02006-01-012006 [42] current
Elongated circle 26.svg DE 26 22.9636.95 DE / MD 54  / MD 353 near Gumboro Road end at Bethany Beach 01936-01-011936 [4] current
Circle sign 28.svg DE 28 12.7920.58 US 13 at Laurel DE 18 at Georgetown 01936-01-011936 [4] 01974-01-011974 [12] [13] Replaced by US 9
Elongated circle 30.svg DE 30 22.6336.42 DE 24 at Millsboro DE 1 Bus. at Milford 01938-01-011938 [33] current
Delaware 30 1926.svg DE 30 11.618.7 DE 20 in Seaford DE 404 near Bridgeville 01936-01-011936 [40] 01938-01-011938 [33]
Alt plate.svg
Elongated circle 30.svg DE 30 Alt.
0.741.19 DE 30 at Cedar Creek DE 1 at Cedar Creek 01999-01-011999 [43] 02017-01-012017 [44]
Delaware 32 1964.svg DE 32 38.5962.10 MD 467 near Delmar DE 14 at Fenwick Island 01968-01-011968 [31] 01969-01-011969 [45] Replaced by DE 54
Elongated circle 34.svg DE 34 3.305.31Duncan Road near Prices Corner DE 100 near Elsmere 01974-01-011974 [46] 02019-01-012019 [46]
Elongated circle 36.svg DE 36 23.2837.47 DE 404 at Scotts Corner Bay Avenue in Slaughter Beach 01938-01-011938 [33] current
Elongated circle 37.svg DE 37 3.115.01 DE 273 near Christiana US 202  / DE 141 near New Castle Airport 01985-01-011985 [47] current
Elongated circle 41.svg DE 41 6.199.96 DE 2  / DE 62 at Prices Corner PA 41 near Hockessin 01936-01-011936 [4] currentOriginally continued to New Castle along DE-62 and DE-141. Cut back to end at DE-141 at DE-2 and in 2015 again to present end.
Elongated circle 42.svg DE 42 12.7420.50 DE 6 at Blackiston DE 9 at Leipsic 01936-01-011936 [4] current
Elongated circle 44.svg DE 44 6.6510.70 DE 300 at Everetts Corner DE 8 at Pearsons Corner 01936-01-011936 [4] current
Elongated circle 48.svg DE 48 7.0911.41 DE 41 at Hockessin US 13 Bus. at Wilmington 01936-01-011936 [4] currentOnce continued to ferry docks near Port of Wilmington and connected with NJ-48 via a ferry to Penns Grove
Elongated circle 52.svg DE 52 7.8712.67 US 13 Bus. at Wilmington PA 52 near Centerville 01936-01-011936 [4] current
Elongated circle 54.svg DE 54 38.5962.10 MD 54 near Delmar DE 1 at Fenwick Island 01969-01-011969 [45] currentPortion of route runs concurrent with MD 54 on Maryland state line
Alt plate.svg
Elongated circle 54.svg DE 54 Alt.
8.613.8 DE 54 at Bunting DE 26 at Bethany Beach 02006-01-012006 [42] current
Elongated circle 58.svg DE 58 3.866.21 DE 4 at Christiana DE 273 near Hares Corner 01985-01-011985 [47] current
Elongated circle 62.svg DE 62 3.024.86 DE 2  / DE 41 at Prices Corner Dead end at Newport 01981-01-011981 [48] current
Elongated circle 71.svg DE 71 21.9935.39 US 13 near Townsend US 13  / DE 1 at Tybouts Corner 01938-01-011938 [33] currentEnd point once followed path of US-301 to meet former MD-71
Elongated circle 72.svg DE 72 17.4228.03 DE 9 near Delaware City DE 7 at Pike Creek 01942-01-011942 [49] current
Elongated circle 82.svg DE 82 5.498.84 DE 52 near Greenville PA 82 near Yorklyn 01952-01-011952 [50] current
Elongated circle 92.svg DE 92 8.8314.21 DE 100 near Montchanin US 13 at Claymont 01968-01-011968 [31] current
Ellipse sign 100.svg DE 100 8.9914.47 DE 4 near Elsmere SR 3100 near Montchanin 01938-01-011938 [33] currentContinued as PA-100 until 2003
Ellipse sign 141.svg DE 141 11.6018.67 DE 9  / DE 273 at New Castle US 202  / DE 261 near Fairfax 01952-01-011952 [50] current
Ellipse sign 202.svg DE 202 1.011.63 US 13 Bus. at Wilmington I-95  / US 202 at Wilmington 01981-01-011981 [48] currentOld alignment of US-202
Ellipse sign 261.svg DE 261 4.377.03 US 202  / DE 141 near Fairfax PA 261 near Ways Corner01938-01-011938 [33] current
Ellipse sign 273.svg DE 273 12.6620.37 MD 273 at Newark DE 9  / DE 141 at New Castle 01936-01-011936 [4] current
Ellipse sign 279.svg DE 279 1.051.69 MD 279 at Newark DE 4  / DE 896 at Newark 02013-01-012013 [30] currentFormer DE 2
Ellipse sign 286.svg DE 286 1.732.78 MD 286 near Chesapeake City, MD DE 15 near Summit Bridge 01994-01-011994 [41] current
Ellipse sign 299.svg DE 299 9.7715.72 MD 282 near Warwick, MD DE 9 at Mathews Corners 01957-01-011957 [19] [20] currentFormer DE 4, originally connected to MD-299 at Warwick
Ellipse sign 300.svg DE 300 11.8319.04 MD 300 near Everetts Corner US 13  / DE 6 at Smyrna 01936-01-011936 [4] current
Ellipse sign 404.svg DE 404 35.2256.68 MD 404 near Adams Crossroads US 9  / DE 1  / US 9 Bus. at Nassau 01936-01-011936 [4] current
No image.svgAlt plate.svgNo image.svg
Elongated circle 404.svg DE 404 Alt.
4.657.48 DE 404 near Bridgeville US 13  / DE 404 near Bridgeville 01990-01-011990 [29] 01999-01-011999 [43] Replaced by DE 404
No image.svgBusiness plate.svgNo image.svg
Ellipse sign 404.svg DE 404 Bus.
3.455.55 DE 404 near Bridgeville US 13  / DE 404 near Bridgeville 01999-01-011999 [43] currentFormer DE 404
No image.svgTruck plate.svgNo image.svg
Ellipse sign 404.svg DE 404 Truck
7.211.6 US 113  / DE 18  / DE 404 at Georgetown US 9  / DE 404 at Georgetown
Ellipse sign 491.svg DE 491 0.360.58 DE 92 near Claymont PA 491 near Claymont Shortest state route, only two signs posted along DE-92
Ellipse sign 896.svg DE 896 21.1334.01 US 13 at Boyds Corner MD 896 near Newark 01938-01-011938 [33] currentOnce continued south on DE-71 to US-13 near Blackbird
No image.svgAlt plate.svgNo image.svg
Ellipse sign 896.svg DE 896 Alt.
11.017.7 US 13  / DE 896 at Boyds Corner US 40  / US 301  / DE 896 at Glasgow 02012-01-012012Detour around Summit Bridge during construction, some signs still posted as of April 2016
No image.svgBusiness plate.svgNo image.svg
Ellipse sign 896.svg DE 896 Bus.
1.782.86 DE 896 near Glasgow DE 896 near Glasgow 01996-01-011996 [27] currentNorthbound does not reconnect to DE-896, must use US-40 east
  •       Former
  •       Proposed and unbuilt

See also

References

  1. Annual Report of the State Highway Department (PDF) (Report) (1925 ed.). Dover, Delaware: Delaware State Highway Department. December 31, 1925. p. 17. Retrieved November 18, 2010.
  2. Annual Report of the Chief Engineer State Highway Department (PDF) (Report) (1930 ed.). Dover, Delaware: Delaware State Highway Department. December 31, 1930. p. 19. Retrieved November 18, 2010.
  3. Annual Report of the Chief Engineer State Highway Department (PDF) (Report) (1932 ed.). Dover, Delaware: Delaware State Highway Department. December 31, 1932. p. 31. Retrieved November 18, 2010.
  4. 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 Delaware State Highway Department; The National Survey Co. (1936). Official Road Map of the State of Delaware (PDF) (Map) (1936–1937 ed.). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  5. Annual Report of the Chief Engineer Delaware State Highway Department (PDF) (Report) (1956 ed.). Dover, Delaware: Delaware State Highway Department. July 1, 1956. p. 8. Retrieved November 18, 2010.
  6. 1 2 3 4 Lengths to two decimal places provided by DelDOT Traffic Count and Mileage Report: Interstate, Delaware, and US Routes. Lengths to one decimal place provided by Google Maps.
  7. Official Route Numbering for the National System of Interstate and Defense Highways (Map). American Association of State Highway Officials. August 14, 1957. Retrieved November 9, 2014.
  8. 1 2 3 4 5 Delaware State Highway Department (1959). Official Highway Map of Delaware (PDF) (Map) (1959–1960 ed.). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  9. Report of the State Highway Department of the State of Delaware (PDF) (Report) (1962 ed.). Dover, Delaware: Delaware State Highway Department. 1962. p. 93. Retrieved December 4, 2014.
  10. Special Committee on U.S. Route Numbering (June 25, 1979). "Route Numbering Committee Agenda Showing Action Taken by the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 501. Retrieved November 13, 2014 via Wikimedia Commons.
  11. Special Committee on U.S. Route Numbering (November 14, 1980). "Route Numbering Committee Agenda" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 519. Retrieved November 13, 2014 via Wikimedia Commons.
  12. 1 2 U.S. Route Numbering Subcommittee (June 25, 1974). "U.S. Route Numbering Subcommittee Agenda" (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 448. Retrieved October 16, 2014 via Wikisource.
  13. 1 2 3 Delaware Department of Highways and Transportation (1976). Delaware Highways Official Map (PDF) (Map). Dover: Delaware Department of Highways and Transportation. Retrieved November 24, 2015.
  14. 1 2 3 4 Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC   32889555 . Retrieved November 7, 2013 via Wikimedia Commons.
  15. 1 2 "U.S. 202 - Maine to Delaware". General Highway History. Federal Highway Administration. Retrieved August 26, 2019.
  16. 1 2 Special Committee on U.S. Route Numbering (June 20, 1983). "Route Numbering Committee Agenda" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 535. Retrieved October 11, 2014 via Wikimedia Commons.
  17. 1 2 Delaware Department of Transportation (1984). Official State Highway Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  18. Special Committee on U.S. Route Numbering (October 1, 1983). "Route Numbering Committee Agenda" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 538. Retrieved October 15, 2014 via Wikisource.
  19. 1 2 3 4 Delaware State Highway Department (1954). Official Highway Map of Delaware (PDF) (Map) (1954–1955 ed.). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  20. 1 2 3 4 Delaware State Highway Department (1957). Official Highway Map of Delaware (PDF) (Map) (1957–1958 ed.). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  21. 1 2 3 4 U.S. Route Numbering Subcommittee (November 7, 1970). "U.S. Route Numbering Subcommittee Agenda Showing Action Taken by the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway Officials. p. 397. Retrieved October 15, 2014 via Wikimedia Commons.
  22. Delaware State Highway Department (1939). Official Road Map of the State of Delaware (PDF) (Map). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  23. General Highway Map Delaware County, Pennsylvania (PDF) (Map). Pennsylvania Department of Highways. 1950. Retrieved January 14, 2014.
  24. Official Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1970. Retrieved January 16, 2014.
  25. Special Committee on U.S. Route Numbering (October 7, 2003). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved April 15, 2010.
  26. 1 2 3 Maryland State Highway Administration (1974). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Highway Administration.
  27. 1 2 Delaware Department of Transportation Division of Planning Cartographic Information Section (1996). Delaware Official State Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  28. 1 2 Maryland State Highway Administration (1977). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Highway Administration.
  29. 1 2 Delaware Department of Transportation (1990). Official State Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  30. 1 2 Shannon, Josh (July 1, 2013). "A route to less clutter: DelDOT to consolidate Newark route numbers". Newark Post. Retrieved August 15, 2013.
  31. 1 2 3 Delaware State Highway Department (1968). Official Highway Map (PDF) (Map). Dover: Delaware State Highway Department. Northern New Castle County inset. Retrieved November 24, 2015.
  32. Delaware State Highway Department (1967). Official Highway Map (PDF) (Map). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  33. 1 2 3 4 5 6 7 8 9 10 11 Delaware State Highway Department; The National Survey Co. (1938). Official Road Map of the State of Delaware (PDF) (Map). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  34. "State of Delaware Capital Transportation Program 2006-2011: Road System Locals" (PDF). Delaware Department of Transportation. Retrieved August 21, 2020.
  35. Delaware Department of Highways and Transportation (1971). Delaware Highways Official Map (PDF) (Map). Dover: Delaware Department of Highways and Transportation. Retrieved November 24, 2015.
  36. Delaware Department of Transportation (1988). Official State Highway Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  37. Delaware State Highway Department (1966). Official Highway Map (PDF) (Map). Dover: Delaware State Highway Department. Retrieved November 24, 2015.
  38. Delaware Department of Transportation (2008). Delaware Official Transportation Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  39. "City of Harrington Truck Route By-Pass Opens Today". Delaware Department of Transportation. August 20, 2008. Archived from the original on January 17, 2009. Retrieved February 1, 2009.
  40. 1 2 "1940 Census Enumeration District Maps: Delaware, Sussex County, ED 3-1 - ED 3-57". United States Census Bureau. Retrieved December 20, 2017.
  41. 1 2 Delaware Department of Transportation Division of Planning Cartographic Information Section (1994). Delaware Official State Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  42. 1 2 Delaware Department of Transportation (2006). Delaware Official Transportation Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
  43. 1 2 3 Delaware Department of Transportation (1999). Delaware Official Transportation Map (PDF) (Map). Dover: Delaware Department of Transportation. Retrieved November 24, 2015.
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