US 12 over Deep Creek
GoodBroadwater County, Montana · 14M E Townsend · Structure no. P00014014+08001
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 73 ft
- 1 main span
- Daily traffic
- 720
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Deep Creek is a prestressed concrete slab carrying US 12 over Deep Creek in Broadwater County, Montana. It was built in 2015, so it is 10 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 720 vehicles a day, roughly 9% of them trucks, projected to reach 756 by 2043. The structure is 73 ft (22.3 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 2015, making it 10 years old in 2025.
What condition is US 12 over Deep Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.
How much traffic does US 12 over Deep Creek carry?
About 720 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is US 12 over Deep Creek?
The structure is 73 ft (22.3 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.
Who owns US 12 over Deep Creek?
It is owned by the State Highway Agency.