Petersburg Road over Little Raisin River
FairMonroe County, Michigan · 1.75 MI S of M-50 · Structure no. 000000000007234
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 689
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Petersburg Road over Little Raisin River is a prestressed concrete box beam or girders - multiple carrying Petersburg Road over Little Raisin River in Monroe County, Michigan. It was built in 1978, so it is 47 years old, younger than the Michigan average of 48.3 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 689 vehicles a day, roughly 3% of them trucks, projected to reach 870 by 2031. The structure is 30 ft (9.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Petersburg Road over Little Raisin River built?
It was built in 1978, making it 47 years old in 2025.
What condition is Petersburg Road over Little Raisin River 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 May 2024.
How much traffic does Petersburg Road over Little Raisin River carry?
About 689 vehicles per day (2011 count), of which roughly 3% are trucks.
How long is Petersburg Road over Little Raisin River?
The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 33 ft wide.
Who owns Petersburg Road over Little Raisin River?
It is owned by the County Highway Agency.