Sinclair Creek RD over Sinclair Creek 161
GoodLincoln County, Montana · 3M NE Eureka · Structure no. L27102006+04001
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected September 2024
- Type
- Channel Beam
- Prestressed Concrete
- Length
- 24 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Sinclair Creek RD over Sinclair Creek 161 is a prestressed concrete channel beam carrying Sinclair Creek RD over Sinclair Creek 161 in Lincoln County, Montana. It was built in 1977, so it is 48 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Sinclair Creek RD over Sinclair Creek 161 built?
It was built in 1977, making it 48 years old in 2025.
What condition is Sinclair Creek RD over Sinclair Creek 161 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does Sinclair Creek RD over Sinclair Creek 161 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Sinclair Creek RD over Sinclair Creek 161?
The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.
Who owns Sinclair Creek RD over Sinclair Creek 161?
It is owned by the County Highway Agency.