US 12 over Stockpass-Drainage
GoodMusselshell County, Montana · 3M NE Musselshell · Structure no. P00014195+06001
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Concrete
- Length
- 27 ft
- 2 main spans
- Daily traffic
- 360
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Stockpass-Drainage is a concrete culvert carrying US 12 over Stockpass-Drainage in Musselshell County, Montana. It was built in 2003, so it is 22 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 360 vehicles a day, roughly 21% of them trucks, projected to reach 378 by 2043. The structure is 27 ft (8.3 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Stockpass-Drainage built?
It was built in 2003, making it 22 years old in 2025.
What condition is US 12 over Stockpass-Drainage 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 December 2023.
How much traffic does US 12 over Stockpass-Drainage carry?
About 360 vehicles per day (2023 count), of which roughly 21% are trucks.
How long is US 12 over Stockpass-Drainage?
The structure is 27 ft (8.3 m) long with a longest span of 12 ft (3.8 m).
Who owns US 12 over Stockpass-Drainage?
It is owned by the State Highway Agency.