Valley RD S641 over Trap Rock River
GoodHoughton County, Michigan · 4 MI N of Lake Linden · Structure no. 000000000003421
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 281
- 1993 count
- Owner
- County
- County Highway Agency
About this bridge
Valley RD S641 over Trap Rock River is a prestressed concrete box beam or girders - multiple carrying Valley RD S641 over Trap Rock River in Houghton County, Michigan. It was built in 1992, so it is 33 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 281 vehicles a day, projected to reach 400 by 2013. The structure is 50 ft (15.2 m) long and 34 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Valley RD S641 over Trap Rock River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Valley RD S641 over Trap Rock 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 Valley RD S641 over Trap Rock River carry?
About 281 vehicles per day (1993 count).
How long is Valley RD S641 over Trap Rock River?
The structure is 50 ft (15.2 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.
Who owns Valley RD S641 over Trap Rock River?
It is owned by the County Highway Agency.