109 TH Ave over N Br of Black River
GoodAllegan County, Michigan · Approx 0.40 MI E of 68th · Structure no. 000000000000170
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 66 ft
- 2 main spans
- Daily traffic
- 2,153
- 2016 count
- Owner
- County
- County Highway Agency
About this bridge
109 TH Ave over N Br of Black River is a prestressed concrete box beam or girders - multiple carrying 109 TH Ave over N Br of Black River in Allegan 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 2,153 vehicles a day, roughly 7% of them trucks, projected to reach 3,200 by 2036. The structure is 66 ft (20.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 109 TH Ave over N Br of Black River built?
It was built in 1977, making it 48 years old in 2025.
What condition is 109 TH Ave over N Br of Black 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 109 TH Ave over N Br of Black River carry?
About 2,153 vehicles per day (2016 count), of which roughly 7% are trucks.
How long is 109 TH Ave over N Br of Black River?
The structure is 66 ft (20.1 m) long with a longest span of 33 ft (10 m) and a deck 33 ft wide.
Who owns 109 TH Ave over N Br of Black River?
It is owned by the County Highway Agency.