US-12 WB over M-39
GoodWayne County, Michigan · In Dearborn over M-39 · Structure no. 000000000011314
- Built
- 1970
- 55 years old, rebuilt 2020
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 243 ft
- 4 main spans
- Daily traffic
- 21,825
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US-12 WB over M-39 is a steel stringer/multi-beam or girder carrying US-12 WB over M-39 in Wayne County, Michigan. It was built in 1970 and reconstructed in 2020, 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 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 21,825 vehicles a day, roughly 2% of them trucks, projected to reach 23,175 by 2040. The structure is 243 ft (74.2 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-12 WB over M-39 built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2020.
What condition is US-12 WB over M-39 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 September 2024.
How much traffic does US-12 WB over M-39 carry?
About 21,825 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is US-12 WB over M-39?
The structure is 243 ft (74.2 m) long with a longest span of 91 ft (27.8 m) and a deck 76 ft wide.
Who owns US-12 WB over M-39?
It is owned by the State Highway Agency.