Big Lake CR RD over Big Hole River 091
FairPosted for loadBeaverhead County, Montana · 8M N Jackson · Structure no. L01083001+09001
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 62 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Big Lake CR RD over Big Hole River 091 is a steel stringer/multi-beam or girder carrying Big Lake CR RD over Big Hole River 091 in Beaverhead County, Montana. It was built in 1976, so it is 49 years old, older than the Montana average of 47 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 3% of them trucks, projected to reach 100 by 2040. The structure is 62 ft (18.9 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Big Lake CR RD over Big Hole River 091 built?
It was built in 1976, making it 49 years old in 2025.
What condition is Big Lake CR RD over Big Hole River 091 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 Big Lake CR RD over Big Hole River 091 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Big Lake CR RD over Big Hole River 091?
The structure is 62 ft (18.9 m) long with a longest span of 30 ft (9 m) and a deck 20 ft wide.
Who owns Big Lake CR RD over Big Hole River 091?
It is owned by the County Highway Agency.