Forest Lake R FH79 over Au Train River
GoodAlger County, Michigan · 1.44 MI S of Au Train · Structure no. 000000000000060
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 82 ft
- 1 main span
- Daily traffic
- 500
- 1995 count
- Owner
- County
- County Highway Agency
About this bridge
Forest Lake R FH79 over Au Train River is a prestressed concrete stringer/multi-beam or girder carrying Forest Lake R FH79 over Au Train River in Alger County, Michigan. It was built in 1977, so it is 48 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 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 500 vehicles a day, projected to reach 1,000 by 2015. The structure is 82 ft (25 m) long and 38 ft wide. If it were closed, the detour would be 21.7 mi (35 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 | 7 Good | Some minor problems. |
| 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 Forest Lake R FH79 over Au Train River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Forest Lake R FH79 over Au Train 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 September 2023.
How much traffic does Forest Lake R FH79 over Au Train River carry?
About 500 vehicles per day (1995 count).
How long is Forest Lake R FH79 over Au Train River?
The structure is 82 ft (25 m) long with a longest span of 79 ft (24 m) and a deck 38 ft wide.
Who owns Forest Lake R FH79 over Au Train River?
It is owned by the County Highway Agency.