US-12 M/W Tri Lvl over Acm Test Track
FairWashtenaw County, Michigan · 1.4 MI W of CO Line/Wiard · Structure no. 000000000010851
- Built
- 1942
- 83 years old, rebuilt 2017
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 38,000
- 1995 count
- Owner
- State
- State Highway Agency
About this bridge
US-12 M/W Tri Lvl over Acm Test Track is a steel stringer/multi-beam or girder carrying US-12 M/W Tri Lvl over Acm Test Track in Washtenaw County, Michigan. It was built in 1942 and reconstructed in 2017, so it is 83 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 38,000 vehicles a day, roughly 3% of them trucks, projected to reach 34,779 by 2015. The structure is 142 ft (43.4 m) long and 73 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-12 M/W Tri Lvl over Acm Test Track built?
It was built in 1942, making it 83 years old in 2025. It was reconstructed in 2017.
What condition is US-12 M/W Tri Lvl over Acm Test Track 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 July 2024.
How much traffic does US-12 M/W Tri Lvl over Acm Test Track carry?
About 38,000 vehicles per day (1995 count), of which roughly 3% are trucks.
How long is US-12 M/W Tri Lvl over Acm Test Track?
The structure is 142 ft (43.4 m) long with a longest span of 52 ft (15.8 m) and a deck 73 ft wide.
Who owns US-12 M/W Tri Lvl over Acm Test Track?
It is owned by the State Highway Agency.