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 / 39.45806°N 105.12722°W / 39.45806; -105.12722 (Keystone Bridge )
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 / 39.71778°N 109.02417°W / 39.71778; -109.02417 (Uintah Railway, Whiskey Creek Trestle )
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 / 38.12722°N 103.86167°W / 38.12722; -103.86167 (Manzanola Bridge )
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 / 38.67500°N 106.36472°W / 38.67500; -106.36472 (Denver South Park & Pacific Railroad Truss Bridge )
CO-25 CO-49
Denver, South Park and Pacific Railroad Bridge Hortense Bridge
Replaced
Queen post truss
1880
1984 1986
SH 162
Chalk Creek
Nathrop
Chaffee
38°44′01″N 106°09′34″W / 38.73361°N 106.15944°W / 38.73361; -106.15944 (Denver South Park & Pacific Railroad Bridge )
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 / 39.04778°N 108.57583°W / 39.04778; -108.57583 (Black Bridge )
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 / 38.86583°N 106.13889°W / 38.86583; -106.13889 (Four Mile Bridge )
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 / 37.68889°N 106.46000°W / 37.68889; -106.46000 (State Bridge )
CO-37
Swink Bridge
Replaced
Parker truss
1912
1985
CR 24.5
Arkansas River
Swink
Otero
38°01′37″N 103°37′44″W / 38.02694°N 103.62889°W / 38.02694; -103.62889 (Swink Bridge )
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 / 38.79194°N 107.72583°W / 38.79194; -107.72583 (Hotchkiss Bridge )
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 / 39.05444°N 108.56583°W / 39.05444; -108.56583 (Fifth Street Bridge )
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 / 40.00028°N 104.82750°W / 40.00028; -104.82750 (Baseline Bridge )
CO-48
Broadway Bridge
Replaced
Steel built-up girder
1896
1986
Broadway
Cherry Creek
Denver
Denver
39°43′37″N 104°59′15″W / 39.72694°N 104.98750°W / 39.72694; -104.98750 (Broadway Bridge )
CO-51
Twentieth Street Viaduct
Replaced
Viaduct
1911
1991
20th Street
South Platte River
Denver
Denver
39°45′38″N 105°00′15″W / 39.76056°N 105.00417°W / 39.76056; -105.00417 (Twentieth Street Viaduct )
CO-52
Fourteenth Street Viaduct
Demolished
Viaduct
1898
1988
14th Street
South Platte River
Denver
Denver
39°44′57″N 105°00′10″W / 39.74917°N 105.00278°W / 39.74917; -105.00278 (Fourteenth Street Viaduct )
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 / 37.17250°N 104.50722°W / 37.17250; -104.50722 (Commercial Street Bridge )
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 / 37.17278°N 104.49917°W / 37.17278; -104.49917 (Linden Avenue Bridge )
CO-55
Nepesta Bridge
Replaced
Pratt truss
1905
1988
CR 613
Arkansas River
Boone
Pueblo
38°10′44″N 104°08′21″W / 38.17889°N 104.13917°W / 38.17889; -104.13917 (Nepesta Bridge )
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 / 39.75139°N 105.00528°W / 39.75139; -105.00528 (Delgany Street Railroad Bridge )
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 / 39.75139°N 105.00528°W / 39.75139; -105.00528 (Cherry Creek Railroad Bridge )
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 / 39.75972°N 105.00417°W / 39.75972; -105.00417 (Nineteenth Street Bridge )
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 / 40.51472°N 106.95389°W / 40.51472; -106.95389 (Four Mile Bridge )
CO-62
Delta Bridge
Replaced
Parker truss
1924
1989
US 50
Gunnison River
Delta
Delta
38°45′02″N 108°04′10″W / 38.75056°N 108.06944°W / 38.75056; -108.06944 (Delta Bridge )
CO-70
Roubideau Bridge
Replaced
Warren truss
1911
1991
G50 Road
Gunnison River
Delta
Delta
38°44′53″N 108°07′12″W / 38.74806°N 108.12000°W / 38.74806; -108.12000 (Roubideau Bridge )
CO-72
Saxton Bridge
Replaced
Parker truss
1890
1993
650 Road
Gunnison River
Delta
Delta
38°45′28″N 108°15′30″W / 38.75778°N 108.25833°W / 38.75778; -108.25833 (Saxton Bridge )
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 / 37.70083°N 106.68556°W / 37.70083; -106.68556 (Baxterville Bridge )
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 / 37.24778°N 104.40528°W / 37.24778; -104.40528 (Elson Bridge )
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 / 38.31056°N 108.88583°W / 38.31056; -108.88583 (Dolores River Bridge )