US-12 over I-75 SB
FairWayne County, Michigan · In Detroit · Structure no. 000000000011749
- Built
- 1970
- 55 years old, rebuilt 1998
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 188 ft
- 3 main spans
- Daily traffic
- 11,831
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-12 over I-75 SB is a steel stringer/multi-beam or girder carrying US-12 over I-75 SB in Wayne County, Michigan. It was built in 1970 and reconstructed in 1998, so it is 55 years old, older 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 11,831 vehicles a day, roughly 10% of them trucks, projected to reach 13,037 by 2018. The structure is 188 ft (57.3 m) long and 112 ft wide.
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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-12 over I-75 SB built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1998.
What condition is US-12 over I-75 SB 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 US-12 over I-75 SB carry?
About 11,831 vehicles per day (2007 count), of which roughly 10% are trucks.
How long is US-12 over I-75 SB?
The structure is 188 ft (57.3 m) long with a longest span of 82 ft (25 m) and a deck 112 ft wide.
Who owns US-12 over I-75 SB?
It is owned by the State Highway Agency.