2150 N over Big Lost River
FairPosted for loadButte County, Idaho · 3.5 S. 0.9 E. Arco · Structure no. 000000000031440
- Built
- 1930
- 95 years old, rebuilt 1987
- Condition
- Fair
- inspected July 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 39 ft
- 1 main span
- Daily traffic
- 30
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
2150 N over Big Lost River is a prestressed concrete tee beam carrying 2150 N over Big Lost River in Butte County, Idaho. It was built in 1930 and reconstructed in 1987, so it is 95 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 6 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 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 39 ft (11.9 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 2150 N over Big Lost River built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1987.
What condition is 2150 N over Big Lost 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 July 2023.
How much traffic does 2150 N over Big Lost River carry?
About 30 vehicles per day (2023 count), of which roughly 50% are trucks.
How long is 2150 N over Big Lost River?
The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.
Who owns 2150 N over Big Lost River?
It is owned by the County Highway Agency.