Bridge Safety in Wyoming

3,138 bridges — 224 Poor condition — avg age 48 years.

Bridge Inventory

Total Bridges3,138
Good Condition895
Fair Condition2,019
Poor Condition224
Oldest BridgeBuilt 1908
Average Age48 years

Condition Summary

% Good28.5%
% Fair64.3%
% Poor7.1%

Highest-Traffic Poor Condition Bridges in Wyoming

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

Bridge Condition Year Built ADT Length
Flat Creek Poor 1938 15,780
Crow Creek Poor 1976 13,625
I-80 Poor 1977 13,143
I-80 Poor 1963 11,096
UPRR / US 30 Poor 1963 11,014
CR 123-1 (Southwest Dr) Poor 1965 10,938
South Greeley Highway Poor 1966 10,938
UPRR / US 30 Poor 1963 10,761
South Greeley Highway Poor 1966 10,689
Fish Creek Poor 1949 10,222
WYO 223 (Terry Ranch Rd) Poor 1964 10,141
UPRR / I-80 Bus Poor 1978 9,974
UPRR / I-80 Bus Poor 1994 9,974
Green River Poor 1982 9,814
UPRR Poor 1982 9,739
Dry Creek Poor 1992 9,573
Big Goose Creek Poor 1968 9,363
Yellow Creek Road Poor 1967 8,996
Sw CR 53 (White Mtn Rd) Poor 1966 7,912
WYO 374 Poor 1967 7,357

Oldest Bridges in Wyoming

Bridge Condition Year Built Age ADT
Smiths Fork River Poor 1908 118 yrs 26
SNAKE RIVER Fair 1911 115 yrs 1,800
Ft Laramie Canal Fair 1913 113 yrs 2
North Piney Creek Fair 1914 112 yrs 32
Ft Laramie Canal Fair 1915 111 yrs 2
FIREHOLE RIVER Fair 1915 111 yrs 250
North Platte River Poor 1915 111 yrs 69
Encampment River Poor 1915 111 yrs 71
Medicine Bow River Poor 1915 111 yrs 59
BNSF Railway Poor 1916 110 yrs 136

Bridge Safety in Wyoming

Bridge condition data for Wyoming 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.