Bridge conditions in Teton County, Idaho
37 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
2 of the 37 bridges the federal inventory lists in Teton County are rated poor; the rest split 20 good and 15 fair.
- 2 of the 37 bridges in Teton County, Idaho, are rated in poor condition (5.4%) in the 2025 National Bridge Inventory, as of .
- 20 bridges (54.1%) are rated good and 15 (40.5%) fair.
- The median Teton County bridge was built in 1999.
- The busiest poor-rated bridge is SH 33 over Spring Creek (built 1975), carrying about 5,600 vehicles a day.
Good 54.1% · Fair 40.5% · Poor 5.4% of 37 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 |
|---|---|---|---|
| SH 33 over Spring Creek | 1975 | 5,600 | Poor |
| S 1000 W over Trail Creek | 1995 | 60 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 33 over Teton Creek | 1979 | 11,500 | Fair |
| SH 33 over Trail Creek | 2010 | 7,500 | Good |
| SH 33 over Trail Creek | 2010 | 7,500 | Good |
| SH 33 over Moose Creek | 2010 | 7,500 | Good |
| SH 31 over Trail Creek;victor Br | 1996 | 6,200 | Fair |
| SH 33 over Spring Creek | 1975 | 5,600 | Poor |
| SH 33 over S.fk.leigh Creek | 1979 | 5,600 | Good |
| SH 33 over Teton River | 1987 | 3,500 | Good |
| Stateline RD;WY16 over Grand Teton Canal | 2005 | 2,300 | Fair |
| SH 32 over Badger Creek | 2016 | 1,600 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Idaho: Idaho 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.