US-12 over US-23
GoodWashtenaw County, Michigan · @ US-12 · Structure no. 000000000010896
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 219 ft
- 2 main spans
- Daily traffic
- 28,825
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US-12 over US-23 is a prestressed concrete stringer/multi-beam or girder carrying US-12 over US-23 in Washtenaw County, Michigan. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 28,825 vehicles a day, roughly 6% of them trucks, projected to reach 36,775 by 2045. The structure is 219 ft (66.8 m) long and 91 ft wide.
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 | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-12 over US-23 built?
It was built in 2023, making it 2 years old in 2025.
What condition is US-12 over US-23 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 April 2024.
How much traffic does US-12 over US-23 carry?
About 28,825 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is US-12 over US-23?
The structure is 219 ft (66.8 m) long with a longest span of 110 ft (33.4 m) and a deck 91 ft wide.
Who owns US-12 over US-23?
It is owned by the State Highway Agency.