US-12 over Prairie River
GoodBranch County, Michigan · 1.3 MI NE ST Joseph Col · Structure no. 000000000001064
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 66 ft
- 1 main span
- Daily traffic
- 4,680
- 2011 count
- Owner
- State
- State Highway Agency
About this bridge
US-12 over Prairie River is a prestressed concrete box beam or girders - multiple carrying US-12 over Prairie River in Branch County, Michigan. It was built in 2011, so it is 14 years old, younger than the Michigan average of 48.3 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 4,680 vehicles a day, roughly 10% of them trucks, projected to reach 5,170 by 2031. The structure is 66 ft (20.1 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-12 over Prairie River built?
It was built in 2011, making it 14 years old in 2025.
What condition is US-12 over Prairie River 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 May 2023.
How much traffic does US-12 over Prairie River carry?
About 4,680 vehicles per day (2011 count), of which roughly 10% are trucks.
How long is US-12 over Prairie River?
The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.7 m) and a deck 47 ft wide.
Who owns US-12 over Prairie River?
It is owned by the State Highway Agency.