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

Name	Image	Built	Listed	Location	County	Type
19th Street Bridge		1888	1985-02-04	Denver 39°45′36″N 105°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, 1910	1996-04-01	Hancock, Pitkin, Quartz	Chaffee, Gunnison
Argo Tunnel and Mill		1893	1978-01-31	Idaho Springs	Clear Creek
Arkansas River Bridge		1937	1985-02-04	Buena Vista 38°48′49″N 106°6′12″W / 38.81361°N 106.10333°W / 38.81361; -106.10333 (Arkansas River Bridge)	Chaffee	Pratt Deck Truss
Avondale Bridge		1913	1985-02-04	Avondale 38°14′32″N 104°20′54″W / 38.24222°N 104.34833°W / 38.24222; -104.34833 (Avondale Bridge)	Pueblo	Luten Arch
Big Thompson River Bridge III			2002-10-15	Loveland 40°24′54″N 105°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			2002-10-15	Loveland 40°25′7″N 105°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			2002-10-15	Falcon 39°0′12″N 104°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		1953	2003-03-11	Boulder 40°0′52″N 105°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		1894	1985-02-04	Florence 38°34′17″N 105°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		1936	1985-02-04	Madrid 37°7′26″N 104°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		1932	1985-02-04	Manitou Springs 38°52′12″N 104°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		1908	2013-07-30	Salida	Chaffee	Concrete slab and girder
Cherry Creek Bridge			2002-10-15	Franktown 39°19′52″N 104°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			2002-10-15	De Beque 39°20′20″N 108°11′36″W / 39.33889°N 108.19333°W / 39.33889; -108.19333 (Colorado River Bridge)	Mesa	Parker through truss
Costilla Crossing Bridge		1892	1985-02-04	Antonito 37°4′43″N 105°45′22″W / 37.07861°N 105.75611°W / 37.07861; -105.75611 (Costilla Crossing Bridge)	Conejos	Thatcher Through Truss
Cottonwood Creek Bridge		1923	2001-10-12	Colorado Springs 38°55′43″N 104°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		ca. 1880	1976-06-18	Cimarron 38°27′2″N 107°36′8″W / 38.45056°N 107.60222°W / 38.45056; -107.60222 (D & RG Narrow Gauge Trestle)	Montrose	Pratt truss
Dolores River Bridge			2002-10-15	Bedrock 38°18′38″N 108°53′9″W / 38.31056°N 108.88583°W / 38.31056; -108.88583 (Dolores River Bridge)	Montrose	Pennsylvania through truss
Dotsero Bridge			2002-10-15	Dotsero 39°38′57″N 107°3′47″W / 39.64917°N 107.06306°W / 39.64917; -107.06306 (Dotsero Bridge)	Eagle	Parker through truss
Douglas Crossing Bridge		1936	1985-02-04	Granada 37°47′43″N 102°15′20″W / 37.79528°N 102.25556°W / 37.79528; -102.25556 (Douglas Crossing Bridge)	Prowers	Stone Ashlar Filled Arch
Eagle River Bridge		1933	2002-10-15	Eagle 39°39′36″N 106°48′55″W / 39.66000°N 106.81528°W / 39.66000; -106.81528 (Eagle River Bridge)	Eagle	Parker through truss
F Street Bridge		1907	1985-02-04	Salida 38°32′16″N 105°59′33″W / 38.53778°N 105.99250°W / 38.53778; -105.99250 (F Street Bridge)	Chaffee	Luten Arch
Fruita Bridge		1906	1985-02-04	Fruita 39°8′13″N 108°43′50″W / 39.13694°N 108.73056°W / 39.13694; -108.73056 (Fruita Bridge)	Mesa	Parker Through Truss
Granada Bridge			2002-10-15	Granada 38°5′38″N 102°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			2014-11-14	Fort Collins, Colorado 40°24′42″N 105°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			2002-10-15	Gunnison 38°31′58″N 106°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			2002-10-15	Gunnison 38°32′2″N 106°56′55″W / 38.53389°N 106.94861°W / 38.53389; -106.94861 (Gunnison River Bridge II)	Gunnison	Pratt through truss
Gunnison Tunnel		1901, 1909	1979-07-22	Montrose	Montrose	Irrigation tunnel
Hay's Ranch Bridge		1900	1985-02-04	Meeker 40°0′48″N 108°5′32″W / 40.01333°N 108.09222°W / 40.01333; -108.09222 (Hay's Ranch Bridge)	Rio Blanco	Pratt Pony Truss
Huerfano Bridge		1921	1985-02-04	Boone 38°13′32″N 104°15′39″W / 38.22556°N 104.26083°W / 38.22556; -104.26083 (Huerfano Bridge)	Pueblo	Filled Spandrel Arch
Labo Del Rio Bridge		1913	1985-06-24	Arboles 37°4′33″N 107°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		ca. 1870	1971-10-07	Silver Plume 39°41′54″N 105°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″N 104°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			2002-10-15	Berthoud 40°18′3″N 104°58′44″W / 40.30083°N 104.97889°W / 40.30083; -104.97889 (Little Thompson River Bridge)	Weld	Camelback pony truss
Main Street Bridge			2002-10-15	Florence 38°23′21″N 105°6′48″W / 38.38917°N 105.11333°W / 38.38917; -105.11333 (Main Street Bridge)	Fremont	Spandrel arch
Maitland Arroyo Bridge			2002-10-15	Walsenburg 37°39′57″N 104°50′0″W / 37.66583°N 104.83333°W / 37.66583; -104.83333 (Maitland Arroyo Bridge)	Huerfano	Timber stringer
Manitou Springs Bridges		1906, 1907	1985-06-24	Manitou Springs 38°51′30″N 104°54′57″W / 38.85833°N 104.91583°W / 38.85833; -104.91583 (Manitou Springs Bridges)	El Paso	Stone arch
Maroon Creek Bridge		1888, 1929	1985-02-04	Aspen 39°11′43″N 106°50′2″W / 39.19528°N 106.83389°W / 39.19528; -106.83389 (Maroon Creek Bridge)	Pitkin	Multi-span Trestle Bridge
Miner Street Bridge		1901	1985-02-04	Idaho Springs 39°39′40″N 105°30′45″W / 39.66111°N 105.51250°W / 39.66111; -105.51250 (Miner Street Bridge)	Clear Creek	Skewed Pratt Pony Truss
Morley Bridge		1881	2003-08-14	Romley 38°40′30″N 106°21′51″W / 38.67500°N 106.36417°W / 38.67500; -106.36417 (Morley Bridge)	Chaffee	Pratt deck truss
North St. Vrain Creek Bridge			2002-10-15	Lyons 40°13′22″N 105°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			2002-10-15	Last Chance 39°44′23″N 103°32′43″W / 39.73972°N 103.54528°W / 39.73972; -103.54528 (Plum Bush Creek Bridge)	Washington	Concrete rigid frame
Portland Bridge		1926	1985-02-04	Portland 38°23′19″N 105°0′56″W / 38.38861°N 105.01556°W / 38.38861; -105.01556 (Portland Bridge)	Fremont	Pratt Semi-deck Truss
Prowers Bridge		1902, 1906, 1909	1985-02-04	Prowers 38°5′37″N 102°46′3″W / 38.09361°N 102.76750°W / 38.09361; -102.76750 (Prowers Bridge)	Bent	Camelback & Pratt Through
Rainbow Arch Bridge		1923	1985-02-04	Fort Morgan 40°16′9″N 103°48′2″W / 40.26917°N 103.80056°W / 40.26917; -103.80056 (Rainbow Arch Bridge)	Morgan	Fixed Rainbow (Marsh) Arch
Red Cliff Bridge		1940	1985-02-04	Red Cliff 39°30′29″N 106°22′34″W / 39.50806°N 106.37611°W / 39.50806; -106.37611 (Red Cliff Bridge)	Eagle	Deck Arch Bridge
Rifle Bridge		1909	1985-02-04	Rifle 39°31′41″N 107°46′51″W / 39.52806°N 107.78083°W / 39.52806; -107.78083 (Rifle Bridge)	Garfield	Pennsylvania/Parker Truss
Rio Grande Railroad Viaduct		1931	2002-10-15	Florence 38°23′10″N 105°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		1936	2002-10-15	San Luis 37°12′0″N 105°25′34″W / 37.20000°N 105.42611°W / 37.20000; -105.42611 (Rito Seco Creek Culvert)	Costilla	Multiplate arch
Rouch Gulch Bridge		1934	2002-11-27	Swissvale 38°28′20″N 105°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		1929, 1931	1983-09-02	Canon City	Fremont	Suspension bridge
San Luis Bridge		1911	1985-02-04	San Luis 37°11′37″N 105°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		1910	2004-01-06	Blanca 37°23′12″N 105°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			2002-10-15	Pueblo 38°15′15″N 104°36′23″W / 38.25417°N 104.60639°W / 38.25417; -104.60639 (Santa Fe Avenue Bridge)	Pueblo	Pennsylvania through truss
Satank Bridge		1900	1985-02-04	Carbondale 39°25′2″N 107°13′48″W / 39.41722°N 107.23000°W / 39.41722; -107.23000 (Satank Bridge)	Garfield	Pratt Through Truss
Sevenmile Bridge		1935, 1981	1985-07-11	Creede 37°47′33″N 106°58′51″W / 37.79250°N 106.98083°W / 37.79250; -106.98083 (Sevenmile Bridge)	Mineral	Pratt deck truss
Sheely Bridge		1911, 1966	1985-02-04	Aspen 39°11′27″N 106°48′46″W / 39.19083°N 106.81278°W / 39.19083; -106.81278 (Sheely Bridge)	Pitkin	Pratt Through Truss
Slate Creek Bridge		1924	1985-06-24	Slate Creek 39°47′0″N 106°9′43″W / 39.78333°N 106.16194°W / 39.78333; -106.16194 (Slate Creek Bridge)	Summit	Parker Pony truss
South Canon Bridge		1914	1985-02-04	Glenwood Springs 39°33′42″N 107°24′23″W / 39.56167°N 107.40639°W / 39.56167; -107.40639 (South Canon Bridge)	Garfield	Pennsylvania Through Truss
South Platte River Bridge		1920	2018-03-22	Lake George 38°59′11″N 105°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		1951	2002-10-15	Denver 39°44′36″N 105°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		1929	2002-10-15	Vona 39°18′1″N 102°43′41″W / 39.30028°N 102.72806°W / 39.30028; -102.72806 (Spring Creek Bridge)	Kit Carson	Concrete Slab
St. Charles Bridge		1924	1985-02-04	Pueblo 38°12′3″N 104°32′46″W / 38.20083°N 104.54611°W / 38.20083; -104.54611 (St. Charles Bridge)	Pueblo	Filled Spandrel Arch
State Bridge		1890	1985-06-24	State Bridge 39°51′29″N 106°38′54″W / 39.85806°N 106.64833°W / 39.85806; -106.64833 (State Bridge)	Eagle	Howe truss
Sutherland Bridge		1924	1985-02-04	Del Norte 37°40′35″N 106°19′36″W / 37.67639°N 106.32667°W / 37.67639; -106.32667 (Sutherland Bridge)	Rio Grande	Warren Pony Truss
West Plum Bush Creek Bridge			2002-10-15	Last Chance 39°44′23″N 103°36′40″W / 39.73972°N 103.61111°W / 39.73972; -103.61111 (West Plum Bush Creek Bridge)	Washington	Concrete rigid frame
Wheeler Bridge		1924	1985-02-04	Del Norte 37°39′29″N 106°17′20″W / 37.65806°N 106.28889°W / 37.65806; -106.28889 (Wheeler Bridge)	Rio Grande	Howe Pony Truss
14th Street Viaduct		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″N 105°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″N 105°27′49″W / 40.38944°N 105.46361°W / 40.38944; -105.46361 (Big Thompson River Bridge II)	Larimer	Camelback pony truss
Black Bridge		1891	removed 1994-07-22	Grand Junction	Mesa	Pratt Through Truss
Broadway Bridge		1895	removed 1995-02-27	Denver	Denver	Open-Web Deck Girder
Commercial Street Bridge		1905	removed 1994-07-22	Trinidad	Las Animas	Luten Arch
Delta Bridge		1923	removed 1994-07-22	Delta	Delta	4-span Parker Through Truss
Elson Bridge		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		1891	1985-02-04 removed 2010-1-14	Canon City 38°26′22″N 105°13′52″W / 38.43944°N 105.23111°W / 38.43944; -105.23111 (Fourth Street Bridge)	Fremont	Pratt Through Truss
Fifth Street Bridge		1933	removed 1994-07-22	Grand Junction	Mesa	Parker Through Truss
Four Mile Bridge		1900	removed 1994-07-22	Steamboat Springs	Routt	Pratt Through Truss
Hortense Bridge		1880	removed 1997-04-14	Nathrop	Chaffee	Queenpost Pony Truss
Hotchkiss Bridge		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		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		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″N 106°40′39″W / 39.70167°N 106.67750°W / 39.70167; -106.67750 (Wolcott Bridge)	Eagle	Luten arch

References