US 12 over Flagstaff Creek
FairMeagher County, Montana · 2M E Checkerboard · Structure no. P00014066+00971
- Built
- 2012
- 13 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 117 ft
- 1 main span
- Daily traffic
- 347
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Flagstaff Creek is a prestressed concrete stringer/multi-beam or girder carrying US 12 over Flagstaff Creek in Meagher County, Montana. It was built in 2012, so it is 13 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 347 vehicles a day, roughly 6% of them trucks, projected to reach 364 by 2043. The structure is 117 ft (35.7 m) long and 35 ft wide. If it were closed, the detour would be 47.8 mi (77 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Flagstaff Creek built?
It was built in 2012, making it 13 years old in 2025.
What condition is US 12 over Flagstaff 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 November 2024.
How much traffic does US 12 over Flagstaff Creek carry?
About 347 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 12 over Flagstaff Creek?
The structure is 117 ft (35.7 m) long with a longest span of 115 ft (35.1 m) and a deck 35 ft wide.
Who owns US 12 over Flagstaff Creek?
It is owned by the State Highway Agency.