Black River Road over Black River
FairCheboygan County, Michigan · Between Sec 7&8 T36NR1E · Structure no. 000000000001538
- Built
- 1975
- 50 years old, rebuilt 2020
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 240 ft
- 5 main spans
- Daily traffic
- 1,100
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Black River Road over Black River is a prestressed concrete box beam or girders - multiple carrying Black River Road over Black River in Cheboygan County, Michigan. It was built in 1975 and reconstructed in 2020, so it is 50 years old, older 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 1,100 vehicles a day, roughly 20% of them trucks, projected to reach 2,000 by 2039. The structure is 240 ft (73.2 m) long and 41 ft wide. If it were closed, the detour would be 28 mi (45 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Black River Road over Black River built?
It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2020.
What condition is Black River Road 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 July 2024.
How much traffic does Black River Road over Black River carry?
About 1,100 vehicles per day (2019 count), of which roughly 20% are trucks.
How long is Black River Road over Black River?
The structure is 240 ft (73.2 m) long with a longest span of 48 ft (14.6 m) and a deck 41 ft wide.
Who owns Black River Road over Black River?
It is owned by the County Highway Agency.