List of bridges on the National Register of Historic Places in Colorado

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The location of the State of Colorado in the United States of America. Colorado in United States.svg
The location of the State of Colorado in the United States of America .

This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Colorado. [1]

Contents

Studies of Colorado's historic bridges, to assess which ones could qualify for National Register listing, were conducted in 1983, 1987, 2000, and 2011. The latter study evaluated "712 bridges and grade separations" which had been built during 1959 to 1968. [2]

Structures

Map all coordinates using: OpenStreetMap
NameImageBuiltListedLocationCountyType
19th Street Bridge 19th Street Bridge Denver CO.jpg 18881985-02-04 Denver
39°45′36″N105°0′12″W / 39.76000°N 105.00333°W / 39.76000; -105.00333 (19th Street Bridge)
Denver 2-span Pratt Through Truss
Alpine Tunnel Historic District 1879, 1881, 19101996-04-01 Hancock, Pitkin, Quartz Chaffee, Gunnison
Argo Tunnel and Mill Argo Gold Mine & Mill.jpg 18931978-01-31 Idaho Springs Clear Creek
Arkansas River Bridge Bridge over Arkansas River (Johnson Village, Colorado).JPG 19371985-02-04 Buena Vista
38°48′49″N106°6′12″W / 38.81361°N 106.10333°W / 38.81361; -106.10333 (Arkansas River Bridge)
Chaffee Pratt Deck Truss
Avondale Bridge Avondale Bridge.jpg 19131985-02-04 Avondale
38°14′32″N104°20′54″W / 38.24222°N 104.34833°W / 38.24222; -104.34833 (Avondale Bridge)
Pueblo Luten Arch
Big Thompson River Bridge III Big Thompson River Bridge III.JPG 2002-10-15 Loveland
40°24′54″N105°11′42″W / 40.41500°N 105.19500°W / 40.41500; -105.19500 (Big Thompson River Bridge III)
Larimer Camelback pony truss
Big Thompson River Bridge IV Big Thompson River Bridge IV.JPG 2002-10-15 Loveland
40°25′7″N105°10′47″W / 40.41861°N 105.17972°W / 40.41861; -105.17972 (Big Thompson River Bridge IV)
Larimer Camelback pony truss
Black Squirrel Creek Bridge Black Squirrel Creek Bridge.jpg 2002-10-15 Falcon
39°0′12″N104°30′46″W / 39.00333°N 104.51278°W / 39.00333; -104.51278 (Black Squirrel Creek Bridge)
El Paso Parker through truss
Boulder Creek Bridge Boulder Creek Bridge (looking east).JPG 19532003-03-11 Boulder
40°0′52″N105°19′12″W / 40.01444°N 105.32000°W / 40.01444; -105.32000 (Boulder Creek Bridge)
Boulder Concrete slab and girder
Bridge No. 10/Adelaide Bridge Bridge No. 10 -- Adelaide Bridge.JPG 18941985-02-04 Florence
38°34′17″N105°5′10″W / 38.57139°N 105.08611°W / 38.57139; -105.08611 (Bridge No. 10/Adelaide Bridge)
Fremont Built-up Deck Girder bridge
Bridge over Burro Canon Bridge over Burro Canon.jpg 19361985-02-04 Madrid
37°7′26″N104°44′26″W / 37.12389°N 104.74056°W / 37.12389; -104.74056 (Bridge over Burro Canon)
Las Animas Stone Multiplate Deck Arch
Bridge over Fountain Creek Bridge Over Fountain Creek - Manitou Springs, CO.JPG 19321985-02-04 Manitou Springs
38°52′12″N104°55′30″W / 38.87000°N 104.92500°W / 38.87000; -104.92500 (Bridge over Fountain Creek)
El Paso Open Spandral Deck Arch
Browns's Canyon Bridge Brown's Canyon Bridge.JPG 19082013-07-30 Salida Chaffee Concrete slab and girder
Cherry Creek Bridge Cherry Creek Bridge.jpg 2002-10-15 Franktown
39°19′52″N104°44′2″W / 39.33111°N 104.73389°W / 39.33111; -104.73389 (Cherry Creek Bridge)
Douglas Two-rib open-spandrel arch
Colorado River Bridge Colorado River Bridge.jpg 2002-10-15 De Beque
39°20′20″N108°11′36″W / 39.33889°N 108.19333°W / 39.33889; -108.19333 (Colorado River Bridge)
Mesa Parker through truss
Costilla Crossing Bridge Costilla Crossing Bridge.jpg 18921985-02-04 Antonito
37°4′43″N105°45′22″W / 37.07861°N 105.75611°W / 37.07861; -105.75611 (Costilla Crossing Bridge)
Conejos Thatcher Through Truss
Cottonwood Creek Bridge Cottonwood Creek Bridge on Vincent Drive.JPG 19232001-10-12 Colorado Springs
38°55′43″N104°48′35″W / 38.92861°N 104.80972°W / 38.92861; -104.80972 (Cottonwood Creek Bridge)
El Paso cantilevered concrete girder
D & RG Narrow Gauge Trestle Drgtrestle.JPG ca. 18801976-06-18 Cimarron
38°27′2″N107°36′8″W / 38.45056°N 107.60222°W / 38.45056; -107.60222 (D & RG Narrow Gauge Trestle)
Montrose Pratt truss
Dolores River Bridge Dolores River Bridge.jpg 2002-10-15 Bedrock
38°18′38″N108°53′09″W / 38.31067°N 108.88577°W / 38.31067; -108.88577 (Dolores River Bridge)
Montrose Pennsylvania through truss
Dotsero Bridge Dotsero Bridge.JPG 2002-10-15 Dotsero
39°38′57″N107°3′47″W / 39.64917°N 107.06306°W / 39.64917; -107.06306 (Dotsero Bridge)
Eagle Parker through truss
Douglas Crossing Bridge Douglas Crossing Bridge.JPG 19361985-02-04 Granada
37°47′43″N102°15′20″W / 37.79528°N 102.25556°W / 37.79528; -102.25556 (Douglas Crossing Bridge)
Prowers Stone Ashlar Filled Arch
Eagle River Bridge Eagle River Bridge.jpg 19332002-10-15 Eagle
39°39′36″N106°48′55″W / 39.66000°N 106.81528°W / 39.66000; -106.81528 (Eagle River Bridge)
Eagle Parker through truss
F Street Bridge F Street Bridge Salida CO.jpg 19071985-02-04 Salida
38°32′16″N105°59′33″W / 38.53778°N 105.99250°W / 38.53778; -105.99250 (F Street Bridge)
Chaffee Luten Arch
Fruita Bridge Fruita Bridge.JPG 19061985-02-04 Fruita
39°8′13″N108°43′50″W / 39.13694°N 108.73056°W / 39.13694; -108.73056 (Fruita Bridge)
Mesa Parker Through Truss
Granada Bridge Granada Bridge (Prowers County, Colorado).JPG 2002-10-15 Granada
38°5′38″N102°18′37″W / 38.09389°N 102.31028°W / 38.09389; -102.31028 (Granada Bridge)
Prowers Steel I-beam stringer
Great Western Sugar Company Effluent Flume and Bridge Great Western Sugar Company Effluent Flume and Bridge.JPG 2014-11-14 Fort Collins, Colorado
40°24′42″N105°02′43″W / 40.41167°N 105.04528°W / 40.41167; -105.04528 (Great Western Sugar Company Effluent Flume and Bridge)
Larimer Suspension bridge
Gunnison River Bridge I Gunnison River Bridge I.JPG 2002-10-15 Gunnison
38°31′58″N106°57′6″W / 38.53278°N 106.95167°W / 38.53278; -106.95167 (Gunnison River Bridge I)
Gunnison Pratt through truss
Gunnison River Bridge II Gunnison River Bridge II.JPG 2002-10-15 Gunnison
38°32′2″N106°56′55″W / 38.53389°N 106.94861°W / 38.53389; -106.94861 (Gunnison River Bridge II)
Gunnison Pratt through truss
Gunnison Tunnel GunnTunn1909.jpg 1901, 19091979-07-22 Montrose Montrose Irrigation tunnel
Hay's Ranch Bridge Hay's Ranch Bridge.JPG 19001985-02-04 Meeker
40°0′48″N108°5′32″W / 40.01333°N 108.09222°W / 40.01333; -108.09222 (Hay's Ranch Bridge)
Rio Blanco Pratt Pony Truss
Huerfano Bridge Huerfano Bridge.JPG 19211985-02-04 Boone
38°13′32″N104°15′39″W / 38.22556°N 104.26083°W / 38.22556; -104.26083 (Huerfano Bridge)
Pueblo Filled Spandrel Arch
Labo Del Rio Bridge Labo Del Rio Bridge.JPG 19131985-06-24 Arboles
37°4′33″N107°24′17″W / 37.07583°N 107.40472°W / 37.07583; -107.40472 (Labo Del Rio Bridge)
Archuleta Pratt through truss
Lebanon and Everett Mine Tunnels GeorgetownCO LebanonMineEntrance.jpg ca. 18701971-10-07 Silver Plume
39°41′54″N105°42′47″W / 39.69833°N 105.71306°W / 39.69833; -105.71306 (Lebanon and Everett Mine Tunnels)
Clear Creek
Little Fountain Creek Bridge 2002-10-15 Widefield
38°40′36″N104°50′55″W / 38.67667°N 104.84861°W / 38.67667; -104.84861 (Little Fountain Creek Bridge)
El Paso Steel multiplate arch
Little Thompson River Bridge Little Thompson River Bridge.JPG 2002-10-15 Berthoud
40°18′3″N104°58′44″W / 40.30083°N 104.97889°W / 40.30083; -104.97889 (Little Thompson River Bridge)
Weld Camelback pony truss
Main Street Bridge Main Street Bridge (Florence, Colorado).JPG 2002-10-15 Florence
38°23′21″N105°6′48″W / 38.38917°N 105.11333°W / 38.38917; -105.11333 (Main Street Bridge)
Fremont Spandrel arch
Maitland Arroyo Bridge Maitland Arroyo Bridge.JPG 2002-10-15 Walsenburg
37°39′57″N104°50′0″W / 37.66583°N 104.83333°W / 37.66583; -104.83333 (Maitland Arroyo Bridge)
Huerfano Timber stringer
Manitou Springs Bridges Manitou Springs Bridges.JPG 1906, 19071985-06-24 Manitou Springs
38°51′30″N104°54′57″W / 38.85833°N 104.91583°W / 38.85833; -104.91583 (Manitou Springs Bridges)
El Paso Stone arch
Maroon Creek Bridge Old Maroon Creek Bridge, Aspen, CO.jpg 1888, 19291985-02-04 Aspen
39°11′43″N106°50′2″W / 39.19528°N 106.83389°W / 39.19528; -106.83389 (Maroon Creek Bridge)
Pitkin Multi-span Trestle Bridge
Miner Street Bridge Miner Street Bridge.jpg 19011985-02-04 Idaho Springs
39°39′40″N105°30′45″W / 39.66111°N 105.51250°W / 39.66111; -105.51250 (Miner Street Bridge)
Clear Creek Skewed Pratt Pony Truss
Morley Bridge Morley Bridge.JPG 18812003-08-14 Romley
38°40′30″N106°21′51″W / 38.67500°N 106.36417°W / 38.67500; -106.36417 (Morley Bridge)
Chaffee Pratt deck truss
North St. Vrain Creek Bridge North St. Vrain Creek Bridge.jpg 2002-10-15 Lyons
40°13′22″N105°16′17″W / 40.22278°N 105.27139°W / 40.22278; -105.27139 (North St. Vrain Creek Bridge)
Boulder Concrete rigid frame
Plum Bush Creek Bridge East Plum Bush Creek Bridge (Last Chance, CO) from S 1.JPG 2002-10-15 Last Chance
39°44′23″N103°32′43″W / 39.73972°N 103.54528°W / 39.73972; -103.54528 (Plum Bush Creek Bridge)
Washington Concrete rigid frame
Portland Bridge Portland Bridge.JPG 19261985-02-04 Portland
38°23′19″N105°0′56″W / 38.38861°N 105.01556°W / 38.38861; -105.01556 (Portland Bridge)
Fremont Pratt Semi-deck Truss
Prowers Bridge Prowers Bridge.JPG 1902, 1906, 19091985-02-04 Prowers
38°5′37″N102°46′3″W / 38.09361°N 102.76750°W / 38.09361; -102.76750 (Prowers Bridge)
Bent Camelback & Pratt Through
Rainbow Arch Bridge Rainbow Arch Bridge (Fort Morgan, Colorado).JPG 19231985-02-04 Fort Morgan
40°16′9″N103°48′2″W / 40.26917°N 103.80056°W / 40.26917; -103.80056 (Rainbow Arch Bridge)
Morgan Fixed Rainbow (Marsh) Arch
Red Cliff Bridge Red Cliff Bridge Colorado.jpg 19401985-02-04 Red Cliff
39°30′29″N106°22′34″W / 39.50806°N 106.37611°W / 39.50806; -106.37611 (Red Cliff Bridge)
Eagle Deck Arch Bridge
Rifle Bridge Rifle Bridge.jpg 19091985-02-04 Rifle
39°31′41″N107°46′51″W / 39.52806°N 107.78083°W / 39.52806; -107.78083 (Rifle Bridge)
Garfield Pennsylvania/Parker Truss
Rio Grande Railroad Viaduct Rio Grande Railroad Viaduct.JPG 19312002-10-15 Florence
38°23′10″N105°4′18″W / 38.38611°N 105.07167°W / 38.38611; -105.07167 (Rio Grande Railroad Viaduct)
Fremont Cantilevered deck girder
Rito Seco Creek Culvert Rito Seco Creek Culvert.JPG 19362002-10-15 San Luis
37°12′0″N105°25′34″W / 37.20000°N 105.42611°W / 37.20000; -105.42611 (Rito Seco Creek Culvert)
Costilla Multiplate arch
Rouch Gulch Bridge Rouch Gulch Bridge 2.jpg 19342002-11-27 Swissvale
38°28′20″N105°52′38″W / 38.47222°N 105.87722°W / 38.47222; -105.87722 (Rouch Gulch Bridge)
Fremont Concrete spandrel arch
Royal Gorge Bridge and Incline Railway Royal gorge bridge 1987.jpg 1929, 19311983-09-02 Canon City Fremont Suspension bridge
San Luis Bridge San Luis Bridge.JPG 19111985-02-04 San Luis
37°11′37″N105°25′49″W / 37.19361°N 105.43028°W / 37.19361; -105.43028 (San Luis Bridge)
Costilla Open Spandrel Arch
San Luis Southern Railway Trestle aka Rattlesnake Trestle San Luis Southern Railway Trestle.JPG 19102004-01-06 Blanca
37°23′12″N105°32′51″W / 37.38667°N 105.54750°W / 37.38667; -105.54750 (San Luis Southern Railway Trestle)
Costilla Railroad Trestle
Santa Fe Avenue Bridge Santa Fe Ave Bridge.jpg 2002-10-15 Pueblo
38°15′15″N104°36′23″W / 38.25417°N 104.60639°W / 38.25417; -104.60639 (Santa Fe Avenue Bridge)
Pueblo Pennsylvania through truss
Satank Bridge Satank Bridge 2012.JPG 19001985-02-04 Carbondale
39°25′2″N107°13′48″W / 39.41722°N 107.23000°W / 39.41722; -107.23000 (Satank Bridge)
Garfield Pratt Through Truss
Sevenmile Bridge Sevenmile Bridge.JPG 1935, 19811985-07-11 Creede
37°47′33″N106°58′51″W / 37.79250°N 106.98083°W / 37.79250; -106.98083 (Sevenmile Bridge)
Mineral Pratt deck truss
Sheely Bridge Sheely Bridge, Aspen, CO.jpg 1911, 19661985-02-04 Aspen
39°11′27″N106°48′46″W / 39.19083°N 106.81278°W / 39.19083; -106.81278 (Sheely Bridge)
Pitkin Pratt Through Truss
Slate Creek Bridge Slate Creek Bridge.jpg 19241985-06-24 Slate Creek
39°47′0″N106°9′43″W / 39.78333°N 106.16194°W / 39.78333; -106.16194 (Slate Creek Bridge)
Summit Parker Pony truss
South Canon Bridge South Canon Bridge.jpg 19141985-02-04 Glenwood Springs
39°33′42″N107°24′23″W / 39.56167°N 107.40639°W / 39.56167; -107.40639 (South Canon Bridge)
Garfield Pennsylvania Through Truss
South Platte River Bridge South Platte River Bridge.JPG 19202018-03-22 Lake George
38°59′11″N105°21′48″W / 38.98639°N 105.36333°W / 38.98639; -105.36333 (South Platte River Bridge)
Park Standard-plan concrete deck and girder
South Platte River Bridges South Platte River Bridges.JPG 19512002-10-15 Denver
39°44′36″N105°0′56″W / 39.74333°N 105.01556°W / 39.74333; -105.01556 (South Platte River Bridges)
Denver Girder-ribbed deck arch
Spring Creek Bridge Spring Creek Bridge (Vona, Colorado).JPG 19292002-10-15 Vona
39°18′1″N102°43′41″W / 39.30028°N 102.72806°W / 39.30028; -102.72806 (Spring Creek Bridge)
Kit Carson Concrete Slab
St. Charles Bridge St. Charles Bridge.JPG 19241985-02-04 Pueblo
38°12′3″N104°32′46″W / 38.20083°N 104.54611°W / 38.20083; -104.54611 (St. Charles Bridge)
Pueblo Filled Spandrel Arch carrying a county road
St. Charles River Bridge 19422003-10-15 Devine Pueblo Parker through truss carrying U.S. 50. Demolished in 2005 but still listed on the NRHP in 2021.
State Bridge State Bridge 19 November 1983.jpg 18901985-06-24 State Bridge
39°51′29″N106°38′54″W / 39.85806°N 106.64833°W / 39.85806; -106.64833 (State Bridge)
Eagle Howe truss
Sutherland Bridge Sutherland Bridge 2023-2.JPG 19241985-02-04 Del Norte
37°39′48.89″N106°17′47.11″W / 37.6635806°N 106.2964194°W / 37.6635806; -106.2964194 (Sutherland Bridge)
Rio Grande Warren Pony Truss
West Plum Bush Creek Bridge West Plum Bush Creek bridge (Last Chance, CO) from SW 2.JPG 2002-10-15 Last Chance
39°44′23″N103°36′40″W / 39.73972°N 103.61111°W / 39.73972; -103.61111 (West Plum Bush Creek Bridge)
Washington Concrete rigid frame
Wheeler Bridge Wheeler Bridge 2019-1.JPG 19241985-02-04 Del Norte
37°39′29″N106°17′20″W / 37.65806°N 106.28889°W / 37.65806; -106.28889 (Wheeler Bridge)
Rio Grande Howe Pony Truss
14th Street Viaduct Fourteenth Street Viaduct, Fourteenth Street at Wazee Street, Denver (Denver County, Colorado).jpg 1898
removed 1994-07-22
Denver Denver steel stringer viaduct
20th Street Viaduct 1909
removed 1994-07-22
Denver Denver Deck Girder/Through Truss
Avery Bridges 1914
removed 2002-09-16
Hoehne and Aguilar Las Animas Avery pony truss
Big Thompson River Bridge I 2002-10-15
removed 2010-11-29
Estes Park
40°22′49″N105°28′19″W / 40.38028°N 105.47194°W / 40.38028; -105.47194 (Big Thompson River Bridge I)
Larimer Camelback pony truss
Big Thompson River Bridge II 2002-10-15
removed 2010-11-29
Estes Park
40°23′22″N105°27′49″W / 40.38944°N 105.46361°W / 40.38944; -105.46361 (Big Thompson River Bridge II)
Larimer Camelback pony truss
Black Bridge OVERALL VIEW OF BRIDGE, LOOKING NORTH FROM SOUTH BANK OF GUNNISON RIVER - Black Bridge, Spanning Gunnison River, Grand Junction, Mesa County, CO HAER COLO,39-GRAJU,2-5.tif 1891
removed 1994-07-22
Grand Junction Mesa Pratt Through Truss
Broadway Bridge Broadway Bridge, Spanning Cherry Creek on Broadway at Speer Boulvea, Denver (Denver County, Colorado).jpg 1895
removed 1995-02-27
Denver Denver Open-Web Deck Girder
Commercial Street Bridge OVERALL VIEW OF BRIDGE, LOOKING WEST (UPSTREAM) - Commercial Street Bridge, Spanning Purgatoire River on Commercial Street, Trinidad, Las Animas County, CO HAER COLO,36-TRIN,3-2.tif 1905
removed 1994-07-22
Trinidad Las Animas Luten Arch
Delta Bridge Delta Bridge, Spanning Gunnison River on U.S. 50, Delta (Delta County, Colorado).jpg 1923
removed 1994-07-22
Delta Delta 4-span Parker Through Truss
Elson Bridge Elson Bridge, Spanning Purgatoire River at County Road 36, El Moro vicinity (Las Animas County, Colorado).jpg 1905
removed 2002-09-16
El Moro Las Animas Pratt Through Truss
Escalante Canon Bridge 1890, 1908, 1938
removed 1994-07-22
Delta Delta Camelback Through Truss
Fourth Street Bridge 18911985-02-04
removed 2010-1-14
Canon City
38°26′22″N105°13′52″W / 38.43944°N 105.23111°W / 38.43944; -105.23111 (Fourth Street Bridge)
Fremont Pratt Through Truss
Fifth Street Bridge OVERALL VIEW AND NORTH PORTAL. VIEW TO SOUTHWEST. - Fifth Street Bridge, U.S. 50 at Colorado River, Grand Junction, Mesa County, CO HAER COLO,39-GRAJU,1-2.tif 1933
removed 1994-07-22
Grand Junction Mesa Parker Through Truss
Four Mile Bridge Four Mile Bridge, Spanning Elk River on County Road 42, Steamboat Springs vicinity (Routt County, Colorado).jpg 1900
removed 1994-07-22
Steamboat Springs Routt Pratt Through Truss
Hortense Bridge Hortense Bridge, Spanning Chalk Creek on State Highway 162, Nathrop (historical) vicinity (Chaffee County, Colorado).jpg 1880
removed 1997-04-14
Nathrop Chaffee Queenpost Pony Truss
Hotchkiss Bridge Hotchkiss Bridge, Spanning North Fork River on County Road 3400, Hotchkiss vicinity (Delta County, Colorado).jpg 1911
removed 1994-07-22
Hotchkiss Delta Camelback Through Truss
Howard Bridge 1924
removed 2002-09-16
Howard Fremont Warren Pony Truss Bridge
Manzanola Bridge Manzanola Bridge, State Highway 207, spanning Arkansas River, Manzanola vicinity (Crowley County, Colorado).jpg 1911, 1950
removed 1994-07-22
Manzanola Crowley Pennsylvania through truss
Masonic Park Bridge 1909, 1933
removed 1994-07-22
South Fork Rio Grande Pratt Through Truss
Nepesta Bridge 1905
removed 1994-07-22
Boone Pueblo Pratt Through Truss
Roubideau Bridge Roubideau Bridge, Spanning Gunnison River at County Road G50R, Delta vicinity (Delta County, Colorado).jpg 1911
removed 1994-07-22
Delta Delta Warren Through Truss
Whiskey Creek Trestle 1905
removed 1987-11-25
Rangely Rio Blanco
Wolcott Bridge 2002-10-15
removed 2012-3-12
Wolcott
39°42′6″N106°40′39″W / 39.70167°N 106.67750°W / 39.70167; -106.67750 (Wolcott Bridge)
Eagle Luten arch

See also

Related Research Articles

<span class="mw-page-title-main">National Register of Historic Places listings in Colorado</span> List of National Register of Historic Places in the U.S. State of Colorado

There are more than 1,500 properties and historic districts in the U.S. State of Colorado listed on the National Register of Historic Places. They are distributed over 63 of Colorado's 64 counties; only the City and County of Broomfield currently has none.

<span class="mw-page-title-main">South Central Colorado Urban Area</span> Metropolitan area of Colorado

The South Central Colorado Urban Area comprises the Colorado Springs Metropolitan Statistical Area, the Pueblo Metropolitan Statistical Area, and the Cañon City Micropolitan Statistical Area in the central and south central region of the State of Colorado. With the exception of northern Teller County and small portions of northern El Paso County, the entire South Central Colorado Urban Area is drained by the Arkansas River and its tributaries. The South Central Colorado Urban Area is the southernmost of the three primary subregions of the Front Range Urban Corridor.

References

  1. "National Register Information System". National Register of Historic Places . National Park Service. July 9, 2010.
  2. Lisa Schoch; Clayton Fraser (May 2011). Colorado Statewide Historic Bridge Inventory Study No. 34.11 (PDF) (Report). Colorado Department of Transportation Applied Research and Innovation Branch.

38°59′50″N105°32′52″W / 38.9972°N 105.5478°W / 38.9972; -105.5478 (State of Colorado)