IRR BIA RTE 8 over Blackfoot River
GoodBingham County, Idaho · 9 KM E of HWY 191&BLKFOOT · Structure no. 00000000000P413
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 91 ft
- 1 main span
- Daily traffic
- 210
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 8 over Blackfoot River is a prestressed concrete tee beam carrying IRR BIA RTE 8 over Blackfoot River in Bingham County, Idaho. It was built in 1975, so it is 50 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 210 vehicles a day, roughly 10% of them trucks, projected to reach 420 by 2043. The structure is 91 ft (27.7 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 IRR BIA RTE 8 over Blackfoot River built?
It was built in 1975, making it 50 years old in 2025.
What condition is IRR BIA RTE 8 over Blackfoot River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does IRR BIA RTE 8 over Blackfoot River carry?
About 210 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 8 over Blackfoot River?
The structure is 91 ft (27.7 m) long with a longest span of 89 ft (27.1 m) and a deck 33 ft wide.
Who owns IRR BIA RTE 8 over Blackfoot River?
It is owned by the Bureau of Indian Affairs.