Hiawatha Trail over Black River
GoodMackinac County, Michigan · 1.0 MI E of Gilchrist · Structure no. 000000000005976
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 250
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Hiawatha Trail over Black River is a prestressed concrete box beam or girders - multiple carrying Hiawatha Trail over Black River in Mackinac County, Michigan. It was built in 1990, so it is 35 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 250 vehicles a day, roughly 3% of them trucks, projected to reach 300 by 2035. The structure is 34 ft (10.4 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Hiawatha Trail over Black River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Hiawatha Trail over 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 October 2023.
How much traffic does Hiawatha Trail over Black River carry?
About 250 vehicles per day (2015 count), of which roughly 3% are trucks.
How long is Hiawatha Trail over Black River?
The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.
Who owns Hiawatha Trail over Black River?
It is owned by the County Highway Agency.