First Street over Black River
FairMason County, Michigan · Village of Custer · Structure no. 000000000006689
- Built
- 1998
- 27 years old
- Condition
- Fair
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 108 ft
- 1 main span
- Daily traffic
- 312
- Owner
- City
- City or Municipal Highway Agency
About this bridge
First Street over Black River is a prestressed concrete box beam or girders - multiple carrying First Street over Black River in Mason County, Michigan. It was built in 1998, so it is 27 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 312 vehicles a day, roughly 5% of them trucks, projected to reach 560 by 2017. The structure is 108 ft (33 m) long and 34 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 First Street over Black River built?
It was built in 1998, making it 27 years old in 2025.
What condition is First Street over 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 April 2023.
How much traffic does First Street over Black River carry?
About 312 vehicles per day (latest count), of which roughly 5% are trucks.
How long is First Street over Black River?
The structure is 108 ft (33 m) long with a longest span of 104 ft (31.8 m) and a deck 34 ft wide.
Who owns First Street over Black River?
It is owned by the City or Municipal Highway Agency.