US 12 over Mcgraws Coulee
GoodRosebud County, Montana · 5M NW Forsyth · Structure no. P00014264+08411
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected August 2024
- Type
- Culvert
- Concrete
- Length
- 35 ft
- 3 main spans
- Daily traffic
- 214
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Mcgraws Coulee is a concrete culvert carrying US 12 over Mcgraws Coulee in Rosebud 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 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 214 vehicles a day, roughly 15% of them trucks, projected to reach 225 by 2043. The structure is 35 ft (10.8 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 Mcgraws Coulee built?
It was built in 2012, making it 13 years old in 2025.
What condition is US 12 over Mcgraws Coulee 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 August 2024.
How much traffic does US 12 over Mcgraws Coulee carry?
About 214 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is US 12 over Mcgraws Coulee?
The structure is 35 ft (10.8 m) long with a longest span of 12 ft (3.7 m).
Who owns US 12 over Mcgraws Coulee?
It is owned by the State Highway Agency.