Loon Lake RD over Fortine Creek 131
FairLincoln County, Montana · W Trego · Structure no. L27086000+01001
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Loon Lake RD over Fortine Creek 131 is a prestressed concrete tee beam carrying Loon Lake RD over Fortine Creek 131 in Lincoln County, Montana. It was built in 1981, so it is 44 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 60 ft (18.4 m) long and 16 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 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Loon Lake RD over Fortine Creek 131 built?
It was built in 1981, making it 44 years old in 2025.
What condition is Loon Lake RD over Fortine Creek 131 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 Loon Lake RD over Fortine Creek 131 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Loon Lake RD over Fortine Creek 131?
The structure is 60 ft (18.4 m) long with a longest span of 58 ft (17.7 m) and a deck 16 ft wide.
Who owns Loon Lake RD over Fortine Creek 131?
It is owned by the County Highway Agency.