STC6731;W 145 N over Snake River
FairBonneville County, Idaho · 9.3 N. 1.4 W. Idaho Falls · Structure no. 000000000020875
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 546 ft
- 5 main spans
- Daily traffic
- 2,800
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
STC6731;W 145 N over Snake River is a prestressed concrete stringer/multi-beam or girder carrying STC6731;W 145 N over Snake River in Bonneville County, Idaho. It was built in 1967, so it is 58 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 2,800 vehicles a day, roughly 7% of them trucks, projected to reach 4,200 by 2042. The structure is 546 ft (166.4 m) long and 33 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was STC6731;W 145 N over Snake River built?
It was built in 1967, making it 58 years old in 2025.
What condition is STC6731;W 145 N over Snake River 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 November 2023.
How much traffic does STC6731;W 145 N over Snake River carry?
About 2,800 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is STC6731;W 145 N over Snake River?
The structure is 546 ft (166.4 m) long with a longest span of 109 ft (33.2 m) and a deck 33 ft wide.
Who owns STC6731;W 145 N over Snake River?
It is owned by the County Highway Agency.