Stateline RD;WY16 over Grand Teton Canal
Teton County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Stateline RD;WY16 over Grand Teton Canal in Teton County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2005, making it 20 years old at the 2025 inventory.
- It carries about 2,300 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 15 of the 37 inventoried bridges in Teton County rated fair (40.5%); 2 (5.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.75083, -111.04667)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 24 ft |
| Location | 1 Mi West of Alta |
| NBI structure number | 000000000031223 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Teton 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 |
All bridges nearby: Teton County, ID bridge conditions · every bridge in Teton County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.