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
1933
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
1933
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
1935
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
1948
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
1945
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
1952
2002-10-15
Bedrock 38°18′38″N 108°53′09″W / 38.31067°N 108.88577°W / 38.31067; -108.88577 (Dolores River Bridge )
Montrose
Pennsylvania through truss
Dotsero Bridge
1935
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
1949
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
1926
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
1927
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
1927
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
1936
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
1938
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
1921
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
1940
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
Romley38°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
1955
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
1938
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
Prowers38°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
1924
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 Creek39°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 carrying a county road
St. Charles River Bridge
1942
2003-10-15
Devine
Pueblo
Parker through truss carrying U.S. 50. Demolished in 2005 but still listed on the NRHP in 2021.
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°39′48.89″N 106°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
1938
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
1937
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
1937
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
1916
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