Bridge Safety in Wyoming
3,138 bridges — 224 Poor condition — avg age 48 years.
Bridge Inventory
| Total Bridges | 3,138 |
| Good Condition | 895 |
| Fair Condition | 2,019 |
| Poor Condition | 224 |
| Oldest Bridge | Built 1908 |
| Average Age | 48 years |
Condition Summary
| % Good | 28.5% |
| % Fair | 64.3% |
| % Poor | 7.1% |
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.