US 12 over Four Mile Creek
FairMeagher County, Montana · 6M NE White Sulphur Spr · Structure no. P00014048+09521
- Built
- 1937
- 88 years old, rebuilt 1965
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 26 ft
- 1 main span
- Daily traffic
- 486
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Four Mile Creek is a wood or timber stringer/multi-beam or girder carrying US 12 over Four Mile Creek in Meagher County, Montana. It was built in 1937 and reconstructed in 1965, so it is 88 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 486 vehicles a day, roughly 4% of them trucks, projected to reach 510 by 2043. The structure is 26 ft (7.9 m) long and 42 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Four Mile Creek built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1965.
What condition is US 12 over Four 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 2023.
How much traffic does US 12 over Four Mile Creek carry?
About 486 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is US 12 over Four Mile Creek?
The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 42 ft wide.
Who owns US 12 over Four Mile Creek?
It is owned by the State Highway Agency.