US 12 over Deep Creek
FairBroadwater County, Montana · 10M E Townsend · Structure no. P00014011+01551
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 75 ft
- 1 main span
- Daily traffic
- 1,323
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Deep Creek is a prestressed concrete stringer/multi-beam or girder carrying US 12 over Deep Creek in Broadwater County, Montana. It was built in 2007, so it is 18 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 1,323 vehicles a day, roughly 5% of them trucks, projected to reach 1,389 by 2043. The structure is 75 ft (22.8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Deep Creek built?
It was built in 2007, making it 18 years old in 2025.
What condition is US 12 over Deep 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 October 2023.
How much traffic does US 12 over Deep Creek carry?
About 1,323 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is US 12 over Deep Creek?
The structure is 75 ft (22.8 m) long with a longest span of 72 ft (22 m) and a deck 42 ft wide.
Who owns US 12 over Deep Creek?
It is owned by the State Highway Agency.