US-41 over Sturgeon River Slough
FairHoughton County, Michigan · 2.3 MI SE of Chassel · Structure no. 000000000003402
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 134 ft
- 3 main spans
- Daily traffic
- 3,985
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
US-41 over Sturgeon River Slough is a steel continuous stringer/multi-beam or girder carrying US-41 over Sturgeon River Slough in Houghton County, Michigan. It was built in 1956, so it is 69 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 5 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 3,985 vehicles a day, roughly 7% of them trucks, projected to reach 4,583 by 2035. The structure is 134 ft (40.8 m) long and 43 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 US-41 over Sturgeon River Slough built?
It was built in 1956, making it 69 years old in 2025.
What condition is US-41 over Sturgeon River Slough 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 2023.
How much traffic does US-41 over Sturgeon River Slough carry?
About 3,985 vehicles per day (2015 count), of which roughly 7% are trucks.
How long is US-41 over Sturgeon River Slough?
The structure is 134 ft (40.8 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.
Who owns US-41 over Sturgeon River Slough?
It is owned by the State Highway Agency.