638 HWY over Black River
GoodPresque Isle County, Michigan · 2.2 MI S of Onaway · Structure no. 000000000008982
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 86 ft
- 1 main span
- Daily traffic
- 300
- 2005 count
- Owner
- County
- County Highway Agency
About this bridge
638 HWY over Black River is a prestressed concrete stringer/multi-beam or girder carrying 638 HWY over Black River in Presque Isle County, Michigan. It was built in 2012, so it is 13 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 300 vehicles a day, roughly 10% of them trucks, projected to reach 540 by 2025. The structure is 86 ft (26.2 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 638 HWY over Black River built?
It was built in 2012, making it 13 years old in 2025.
What condition is 638 HWY 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 September 2023.
How much traffic does 638 HWY over Black River carry?
About 300 vehicles per day (2005 count), of which roughly 10% are trucks.
How long is 638 HWY over Black River?
The structure is 86 ft (26.2 m) long with a longest span of 82 ft (25 m) and a deck 33 ft wide.
Who owns 638 HWY over Black River?
It is owned by the County Highway Agency.