US-23 SB over I-75 NB
GoodArenac County, Michigan · 5.0 MI SW of Standish · Structure no. 000000000000421
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 339 ft
- 5 main spans
- Daily traffic
- 4,566
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-23 SB over I-75 NB is a steel stringer/multi-beam or girder carrying US-23 SB over I-75 NB in Arenac County, Michigan. It was built in 1968, so it is 57 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 4,566 vehicles a day, roughly 8% of them trucks, projected to reach 7,057 by 2018. The structure is 339 ft (103.3 m) long and 35 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-23 SB over I-75 NB built?
It was built in 1968, making it 57 years old in 2025.
What condition is US-23 SB over I-75 NB 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 June 2024.
How much traffic does US-23 SB over I-75 NB carry?
About 4,566 vehicles per day (2007 count), of which roughly 8% are trucks.
How long is US-23 SB over I-75 NB?
The structure is 339 ft (103.3 m) long with a longest span of 86 ft (26.2 m) and a deck 35 ft wide.
Who owns US-23 SB over I-75 NB?
It is owned by the State Highway Agency.