104th Ave over M Br Black River
FairAllegan County, Michigan · Casco Twp Sec 23-26 · Structure no. 000000000000215
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 82 ft
- 2 main spans
- Daily traffic
- 63
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
104th Ave over M Br Black River is a prestressed concrete box beam or girders - multiple carrying 104th Ave over M Br Black River in Allegan County, Michigan. It was built in 1983, so it is 42 years old, younger than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 63 vehicles a day, roughly 7% of them trucks, projected to reach 94 by 2040. The structure is 82 ft (25 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 104th Ave over M Br Black River built?
It was built in 1983, making it 42 years old in 2025.
What condition is 104th Ave over M Br Black River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.
How much traffic does 104th Ave over M Br Black River carry?
About 63 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is 104th Ave over M Br Black River?
The structure is 82 ft (25 m) long with a longest span of 41 ft (12.5 m) and a deck 31 ft wide.
Who owns 104th Ave over M Br Black River?
It is owned by the County Highway Agency.