US-23 SB over Mdot RR Cor & Huron Rvr
FairWashtenaw County, Michigan · 1.2 MI N of M-17 & US-23 · Structure no. 000000000010864
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 475 ft
- 5 main spans
- Daily traffic
- 37,373
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-23 SB over Mdot RR Cor & Huron Rvr is a steel stringer/multi-beam or girder carrying US-23 SB over Mdot RR Cor & Huron Rvr in Washtenaw County, Michigan. It was built in 1962, so it is 63 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 5 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 37,373 vehicles a day, roughly 9% of them trucks, projected to reach 36,802 by 2018. The structure is 475 ft (144.8 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-23 SB over Mdot RR Cor & Huron Rvr built?
It was built in 1962, making it 63 years old in 2025.
What condition is US-23 SB over Mdot RR Cor & Huron Rvr 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-23 SB over Mdot RR Cor & Huron Rvr carry?
About 37,373 vehicles per day (2007 count), of which roughly 9% are trucks.
How long is US-23 SB over Mdot RR Cor & Huron Rvr?
The structure is 475 ft (144.8 m) long with a longest span of 108 ft (32.9 m) and a deck 36 ft wide.
Who owns US-23 SB over Mdot RR Cor & Huron Rvr?
It is owned by the State Highway Agency.