I-75 SB over Huron River
GoodMonroe County, Michigan · In S Rockwood · Structure no. 000000000013442
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 200 ft
- 3 main spans
- Daily traffic
- 31,814
- 2003 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 SB over Huron River is a steel continuous stringer/multi-beam or girder carrying I-75 SB over Huron River in Monroe County, Michigan. It was built in 2009, so it is 16 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 31,814 vehicles a day, roughly 21% of them trucks, projected to reach 40,250 by 2028. The structure is 200 ft (61 m) long and 73 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 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 I-75 SB over Huron River built?
It was built in 2009, making it 16 years old in 2025.
What condition is I-75 SB over Huron 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 August 2023.
How much traffic does I-75 SB over Huron River carry?
About 31,814 vehicles per day (2003 count), of which roughly 21% are trucks.
How long is I-75 SB over Huron River?
The structure is 200 ft (61 m) long with a longest span of 90 ft (27.4 m) and a deck 73 ft wide.
Who owns I-75 SB over Huron River?
It is owned by the State Highway Agency.