Tobacco Siding RD over Tobacco River 146
FairPosted for loadLincoln County, Montana · 6M SE Eureka · Structure no. L27077000+04001
- Built
- 1950
- 75 years old, rebuilt 1970
- Condition
- Fair
- inspected September 2024
- Type
- Girder and Floorbeam System
- Wood or Timber
- Length
- 45 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Tobacco Siding RD over Tobacco River 146 is a wood or timber girder and floorbeam system carrying Tobacco Siding RD over Tobacco River 146 in Lincoln County, Montana. It was built in 1950 and reconstructed in 1970, so it is 75 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 45 ft (13.7 m) long and 19 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tobacco Siding RD over Tobacco River 146 built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1970.
What condition is Tobacco Siding RD over Tobacco River 146 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 September 2024.
How much traffic does Tobacco Siding RD over Tobacco River 146 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Tobacco Siding RD over Tobacco River 146?
The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 19 ft wide.
Who owns Tobacco Siding RD over Tobacco River 146?
It is owned by the County Highway Agency.