Bridge Safety in Colorado

8,990 bridges — 417 Poor condition — avg age 42 years.

Bridge Inventory

Total Bridges8,990
Good Condition3,035
Fair Condition5,538
Poor Condition417
Oldest BridgeBuilt 1887
Average Age42 years

Condition Summary

% Good33.8%
% Fair61.6%
% Poor4.6%

Highest-Traffic Poor Condition Bridges in Colorado

Poor condition bridges sorted by daily traffic — the most urgent safety concerns.

Bridge Condition Year Built ADT Length
GOLDSMITH GULCH Poor 1971 128,000
US 6 ML Poor 1989 107,500
SH 121 ML Poor 1972 101,000
SAND CREEK Poor 1962 60,000
SH 391 ML Poor 1967 57,000
SH 391 ML Poor 1967 57,000
US 6 ML Poor 1969 53,000
SOUTH PLATTE RIVER Poor 1969 48,500
DITCH RD BURLINGTON CANA Poor 1969 48,500
SH 265 ML UP RR BNSF RR Poor 1969 48,500
SERVICE RD BNSF RR Poor 1970 48,500
E 64TH AVE BURLINGTON C Poor 1969 48,500
SOUTH PLATTE RIVER Poor 1969 48,500
LITTLE DRY CREEK Poor 1955 46,000
WEST 20TH AVE Poor 1968 45,500
CLEAR CREEK R Poor 1959 41,000
SAND CREEK Poor 1940 40,000
MARSHALL STREET Poor 1980 38,000
MARSHALL STREET Poor 1980 38,000
CLEAR CREEK Poor 1984 38,000

Oldest Bridges in Colorado

Bridge Condition Year Built Age ADT
COTTONWOOD CREEK Fair 1887 139 yrs 6,580
RIO GRANDE RIVER Poor 1892 134 yrs 37
EAST FORK EIGHT MILE CRK Poor 1894 132 yrs 25
FOREIGN TRADE ZONE BLVD Good 1901 125 yrs 435
Misc Drainage Basin Good 1901 125 yrs 6,085
Local Drainage Poor 1901 125 yrs 309
Capitol Creek Fair 1901 125 yrs 2
SHOOKS RUN Poor 1902 124 yrs 18,034
BESSEMER DITCH Fair 1903 123 yrs 992
TEXAS CREEK Fair 1906 120 yrs 1,800

Bridge Safety in Colorado

Bridge condition data for Colorado comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.