IRR BIA RTE 15 over Blackfoot River
FairPosted for loadBingham County, Idaho · 19 KM N.E. of Blackfoot · Structure no. 00000000000P416
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 85 ft
- 1 main span
- Daily traffic
- 100
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 15 over Blackfoot River is a prestressed concrete slab carrying IRR BIA RTE 15 over Blackfoot River in Bingham County, Idaho. It was built in 1978, so it is 47 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. Its operating status is: posted for load restriction.
It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 200 by 2043. The structure is 85 ft (25.9 m) long and 33 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 IRR BIA RTE 15 over Blackfoot River built?
It was built in 1978, making it 47 years old in 2025.
What condition is IRR BIA RTE 15 over Blackfoot 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 June 2023.
How much traffic does IRR BIA RTE 15 over Blackfoot River carry?
About 100 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 15 over Blackfoot River?
The structure is 85 ft (25.9 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.
Who owns IRR BIA RTE 15 over Blackfoot River?
It is owned by the Bureau of Indian Affairs.