Bridge conditions in Teton County, Wyoming
122 inventoried bridges · 15 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Teton County has 15 bridges rated poor out of 122 inventoried, a 12.3% share that puts it well above the national rate of about 7%.
- 15 of the 122 bridges in Teton County, Wyoming, are rated in poor condition (12.3%) in the 2025 National Bridge Inventory, as of .
- 39 bridges (32.0%) are rated good and 68 (55.7%) fair.
- The median Teton County bridge was built in 1975.
- The busiest poor-rated bridge is US 89 over Flat Creek (built 1938), carrying about 15,780 vehicles a day.
Good 32.0% · Fair 55.7% · Poor 12.3% of 122 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 89 over Flat Creek | 1938 | 15,780 | Poor |
| Wyo 22 over Fish Creek | 1949 | 10,222 | Poor |
| West Entrance Road over Madison River | 1958 | 2,525 | Poor |
| US 191 over Hoback River | 1966 | 2,509 | Poor |
| Grand Loop Road over Bridge Bay Inlet | 1961 | 1,807 | Poor |
| Grand Loop Road over Otter Creek | 1934 | 1,807 | Poor |
| South Entrance Roa over Unnamed Creek | 1972 | 1,598 | Poor |
| Firehole Lake Driv over Thermal Area Drainage | 1935 | 1,500 | Poor |
| Firehole Lake Driv over Thermal Area Drainage | 1935 | 1,500 | Poor |
| Te Cnty Rd 2 over Mosquito Creek | 1955 | 901 | Poor |
| Forest Road 30460 over Hoback River | 1965 | 50 | Poor |
| Forest Road 30980 over Mosquito Creek | 1956 | 50 | Poor |
| Forest Road 30900 over South Fork Fish Creek | 1966 | 50 | Poor |
| Road over Darby Creek | 1960 | 50 | Poor |
| Fountain Freight R over Firehole River | 1925 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 89 over Flat Creek | 1969 | 33,675 | Fair |
| Wyo 22 over Wildlife Crossing | 2023 | 18,401 | Good |
| Wyo 22 over Snake River | 2023 | 18,401 | Good |
| US 89 over Flat Creek | 1938 | 15,780 | Poor |
| Wyo 22 over Wildlife Crossing | 2023 | 12,046 | Fair |
| US 89 over Wildlife Crossing | 2017 | 11,949 | Good |
| US 89 over Snake River | 2019 | 11,746 | Good |
| US 89 over Flat Creek | 2019 | 11,746 | Good |
| US 26 over Snake River | 2022 | 11,746 | Fair |
| US 26 over Wildlife Crossing | 2022 | 11,746 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Wyoming: Wyoming bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.