Bagley Street over Thunder Bay River
GoodAlpena County, Michigan · At City Limits Alpena · Structure no. 000000000000349
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 325 ft
- 4 main spans
- Daily traffic
- 15,000
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Bagley Street over Thunder Bay River is a prestressed concrete stringer/multi-beam or girder carrying Bagley Street over Thunder Bay River in Alpena County, Michigan. It was built in 2021, so it is 4 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 15,000 vehicles a day, roughly 8% of them trucks, projected to reach 19,500 by 2040. The structure is 325 ft (99.1 m) long and 79 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bagley Street over Thunder Bay River built?
It was built in 2021, making it 4 years old in 2025.
What condition is Bagley Street over Thunder Bay 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 Bagley Street over Thunder Bay River carry?
About 15,000 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is Bagley Street over Thunder Bay River?
The structure is 325 ft (99.1 m) long with a longest span of 83 ft (25.3 m) and a deck 79 ft wide.
Who owns Bagley Street over Thunder Bay River?
It is owned by the County Highway Agency.