S 37 FH 57 over Ten Mile Creek
FairLincoln County, Montana · 18M N Libby Dam · Structure no. P00033034+00601
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 230 ft
- 3 main spans
- Daily traffic
- 346
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 37 FH 57 over Ten Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying S 37 FH 57 over Ten Mile Creek in Lincoln County, Montana. It was built in 1974, so it is 51 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.
It carries about 346 vehicles a day, roughly 6% of them trucks, projected to reach 363 by 2043. The structure is 230 ft (70.1 m) long and 41 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 37 FH 57 over Ten Mile Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is S 37 FH 57 over Ten Mile Creek 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 August 2024.
How much traffic does S 37 FH 57 over Ten Mile Creek carry?
About 346 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is S 37 FH 57 over Ten Mile Creek?
The structure is 230 ft (70.1 m) long with a longest span of 75 ft (22.9 m) and a deck 41 ft wide.
Who owns S 37 FH 57 over Ten Mile Creek?
It is owned by the State Highway Agency.