US 20 26;FAP 21SPR over Snake River;nyssa Bridge
FairCanyon County, Idaho · 6.1 N. 0.8 W. Parma · Structure no. 000000000012200
- Built
- 1957
- 68 years old, rebuilt 2005
- Condition
- Fair
- inspected October 2023
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 697 ft
- 3 main spans
- Daily traffic
- 5,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 26;FAP 21SPR over Snake River;nyssa Bridge is a steel continuous girder and floorbeam system carrying US 20 26;FAP 21SPR over Snake River;nyssa Bridge in Canyon County, Idaho. It was built in 1957 and reconstructed in 2005, so it is 68 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,300 vehicles a day, roughly 13% of them trucks, projected to reach 7,950 by 2042. The structure is 697 ft (212.4 m) long and 52 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 26;FAP 21SPR over Snake River;nyssa Bridge built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2005.
What condition is US 20 26;FAP 21SPR over Snake River;nyssa Bridge in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.
How much traffic does US 20 26;FAP 21SPR over Snake River;nyssa Bridge carry?
About 5,300 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is US 20 26;FAP 21SPR over Snake River;nyssa Bridge?
The structure is 697 ft (212.4 m) long with a longest span of 228 ft (69.5 m) and a deck 52 ft wide.
Who owns US 20 26;FAP 21SPR over Snake River;nyssa Bridge?
It is owned by the State Highway Agency.