This is a list of bridges documented by the Historic American Engineering Record in the U.S. State of Colorado.[1] The location of the State of Colorado in the United States of America. Map all coordinates using OpenStreetMap Download coordinates as: KML GPX (all coordinates) GPX (primary coordinates) GPX (secondary coordinates) More information Survey No., Name (as assigned by HAER) ... Survey No. Name (as assigned by HAER) Status Type[2] Built Documented Carries Crosses Location County Coordinates CO-7 South Platte Canyon Road Bridge South Platte Canyon Road Denver Denver CO-9 Keystone Bridge Replaced Pratt truss 1870 1983 Denver, South Park and Pacific Railroad (former) South Platte River south fork Waterton Jefferson and Douglas 39°27′29″N 105°07′38″W CO-10 Uintah Railway, Whiskey Creek Trestle Demolished Trestle 1906 1988 Uintah Railway Whiskey Creek Rangely Rio Blanco 39°43′04″N 109°01′27″W CO-13 Deansbury Bridge Warren truss 1922 1983 Denver, South Park and Pacific Railroad (former) South Platte River Waterton Jefferson and Douglas CO-20 Manzanola Bridge Replaced Pennsylvania truss 1911 1984 SH 207 Arkansas River Manzanola Otero and Crowley 38°07′38″N 103°51′42″W CO-24 Denver, South Park and Pacific Railroad Truss Bridge Extant Pratt truss 1881 1984 Denver, South Park and Pacific Railroad (former) Pomeroy Gulch Romley Chaffee 38°40′30″N 106°21′53″W CO-25CO-49 Denver, South Park and Pacific Railroad BridgeHortense Bridge Replaced Queen post truss 1880 19841986 SH 162 Chalk Creek Nathrop Chaffee 38°44′01″N 106°09′34″W CO-30 Colorado Historic Bridges Survey Denver Denver CO-30-G Black Bridge Demolished Pratt truss 1891 1988 25 3/10 Road Gunnison River Grand Junction Mesa 39°02′52″N 108°34′33″W CO-35 Four Mile Bridge Replaced Pratt truss 1909 1986 CR 371 Arkansas River Buena Vista Chaffee 38°51′57″N 106°08′20″W CO-36 State Bridge Replaced Pratt truss 1908 1985 CR 17 Rio Grande Del Norte Rio Grande 37°41′20″N 106°27′36″W CO-37 Swink Bridge Replaced Parker truss 1912 1985 CR 24.5 Arkansas River Swink Otero 38°01′37″N 103°37′44″W CO-40 Hotchkiss Bridge Replaced Parker truss 1911 1987 3400 Road North Fork Gunnison River Hotchkiss Delta 38°47′31″N 107°43′33″W CO-41 Fifth Street Bridge Replaced Parker truss 1933 1987 US 50 Colorado River Grand Junction Mesa 39°03′16″N 108°33′57″W CO-44 Baseline Bridge Replaced Warren truss 1926 1986 CR 2 (East 168th Avenue) South Platte River Brighton Adams 40°00′01″N 104°49′39″W CO-48 Broadway Bridge Replaced Steel built-up girder 1896 1986 Broadway Cherry Creek Denver Denver 39°43′37″N 104°59′15″W CO-51 Twentieth Street Viaduct Replaced Viaduct 1911 1991 20th Street South Platte River Denver Denver 39°45′38″N 105°00′15″W CO-52 Fourteenth Street Viaduct Demolished Viaduct 1898 1988 14th Street South Platte River Denver Denver 39°44′57″N 105°00′10″W CO-53 Commercial Street Bridge Replaced Reinforced concrete through arch 1905 1988 Commercial Street Purgatoire River Trinidad Las Animas 37°10′21″N 104°30′26″W CO-54 Linden Avenue Bridge Replaced Pennsylvania truss 1912 1988 Linden Avenue Purgatoire River Trinidad Las Animas 37°10′22″N 104°29′57″W CO-55 Nepesta Bridge Replaced Pratt truss 1905 1988 CR 613 Arkansas River Boone Pueblo 38°10′44″N 104°08′21″W CO-57 Delgany Street Railroad Bridge Extant[3][4][5] Pratt truss 1923 1988 Delgany Street Cherry Creek Denver Denver 39°45′05″N 105°00′19″W CO-58 Cherry Creek Railroad Bridge Extant Pratt truss 1923 1988 Colorado and Southern Railway Cherry Creek Denver Denver 39°45′5″N 105°00′19″W CO-59 Nineteenth Street Bridge Extant Pratt truss 1888 1991 19th Street South Platte River Denver Denver 39°45′35″N 105°00′15″W CO-60 Four Mile Bridge Replaced Pratt truss 1900 1988 CR 42 Elk River Steamboat Springs Routt 40°30′53″N 106°57′14″W CO-62 Delta Bridge Replaced Parker truss 1924 1989 US 50 Gunnison River Delta Delta 38°45′02″N 108°04′10″W CO-70 Roubideau Bridge Replaced Warren truss 1911 1991 G50 Road Gunnison River Delta Delta 38°44′53″N 108°07′12″W CO-72 Saxton Bridge Replaced Parker truss 1890 1993 650 Road Gunnison River Delta Delta 38°45′28″N 108°15′30″W CO-76 Baxterville Bridge Replaced Pratt truss 1909 1993 Masonic Park Drive Rio Grande South Fork Rio Grande 37°42′03″N 106°41′08″W CO-77 Elson Bridge Replaced Pratt truss 1905 1993 CR 36 Purgatoire River El Moro Las Animas 37°14′52″N 104°24′19″W CO-102 Dolores River Bridge Replaced[6] Pennsylvania truss 1952 2016 SH 90 Dolores River Bedrock Montrose 38°18′38″N 108°53′09″W Close History portalEngineering portalUnited States portalColorado portal List of bridges on the National Register of Historic Places in Colorado List of tunnels documented by the Historic American Engineering Record in Colorado Bibliography of Colorado Geography of Colorado History of Colorado Index of Colorado-related articles List of Colorado-related lists Outline of Colorado [1]Library of Congress. "Prints and Photographs Online Catalog: Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey". Retrieved December 28, 2021.[2]Parsons Brinckerhoff; Engineering and Industrial Heritage (October 2005). "NCHRP Project 25-25, Task 15: A Context For Common Historic Bridge Types" (PDF). National Cooperative Highway Research Program, Transportation Research Council, National Research Council. Retrieved December 28, 2021.[3]"Whoops, Denver pedestrian bridge closed because no one knows who owns it". Denverite. 2022-09-15. Retrieved 2023-12-16.[4]"Repairing decades-old bridge in Denver's LoDo neighborhood will cost $250K". Denver 7 Colorado News (KMGH). 2022-07-26. Retrieved 2023-12-16.[5]"Denver says it will cost $3 million to fix bridge with no owner". KUSA.com. 2023-12-15. Retrieved 2023-12-16.[6]"CO 90 Bedrock/Dolores River Bridge - COMPLETED". Colorado Department of Transportation. 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