IRR BIA RTE 904 over Owyhee River
FairOwyhee County, Idaho · 17.4 KM NW of Owyhee · Structure no. 00000000000H311
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 119 ft
- 1 main span
- Daily traffic
- 20
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 904 over Owyhee River is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE 904 over Owyhee River in Owyhee County, Idaho. It was built in 1987, so it is 38 years old, younger 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 24 by 2044. The structure is 119 ft (36.3 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 8 Very Good | No problems noted. |
| 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 904 over Owyhee River built?
It was built in 1987, making it 38 years old in 2025.
What condition is IRR BIA RTE 904 over Owyhee 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 October 2024.
How much traffic does IRR BIA RTE 904 over Owyhee River carry?
About 20 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 904 over Owyhee River?
The structure is 119 ft (36.3 m) long with a longest span of 117 ft (35.7 m) and a deck 31 ft wide.
Who owns IRR BIA RTE 904 over Owyhee River?
It is owned by the Bureau of Indian Affairs.