Big Swamp CR RD / over Big Hole River 089
PoorPosted for loadBeaverhead County, Montana · 5M NW Jackson · Structure no. L01085000+03001
- Built
- 1925
- 100 years old, rebuilt 2024
- Condition
- Poor
- inspected July 2024
- Type
- Truss - Thru
- Steel
- Length
- 100 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Big Swamp CR RD / over Big Hole River 089 is a steel truss - thru carrying Big Swamp CR RD / over Big Hole River 089 in Beaverhead County, Montana. It was built in 1925 and reconstructed in 2024, so it is 100 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. 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 100 ft (30.5 m) long and 15 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 Swamp CR RD / over Big Hole River 089 built?
It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2024.
What condition is Big Swamp CR RD / over Big Hole River 089 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Big Swamp CR RD / over Big Hole River 089 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Big Swamp CR RD / over Big Hole River 089?
The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 15 ft wide.
Who owns Big Swamp CR RD / over Big Hole River 089?
It is owned by the County Highway Agency.