Mill Street over Ausable River
GoodIosco County, Michigan · 0.25 Miles West of US-23 · Structure no. 000000000004138
- Built
- 1971
- 54 years old, rebuilt 2018
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 1,054
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Mill Street over Ausable River is a prestressed concrete box beam or girders - single or spread carrying Mill Street over Ausable River in Iosco County, Michigan. It was built in 1971 and reconstructed in 2018, so it is 54 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 1,054 vehicles a day, roughly 6% of them trucks, projected to reach 1,286 by 2037. The structure is 154 ft (47 m) long and 40 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mill Street over Ausable River built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2018.
What condition is Mill Street over Ausable River 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 Mill Street over Ausable River carry?
About 1,054 vehicles per day (2017 count), of which roughly 6% are trucks.
How long is Mill Street over Ausable River?
The structure is 154 ft (47 m) long with a longest span of 50 ft (15.1 m) and a deck 40 ft wide.
Who owns Mill Street over Ausable River?
It is owned by the County Highway Agency.