Grosvenor HWY over Swamp Raisin Drain
GoodLenawee County, Michigan · 0.2 MI South of Mitchell · Structure no. 000000000005686
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 192
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
Grosvenor HWY over Swamp Raisin Drain is a concrete culvert carrying Grosvenor HWY over Swamp Raisin Drain in Lenawee County, Michigan. It was built in 2008, so it is 17 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 192 vehicles a day, roughly 1% of them trucks, projected to reach 300 by 2031. The structure is 36 ft (11.1 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Grosvenor HWY over Swamp Raisin Drain built?
It was built in 2008, making it 17 years old in 2025.
What condition is Grosvenor HWY over Swamp Raisin Drain 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 November 2024.
How much traffic does Grosvenor HWY over Swamp Raisin Drain carry?
About 192 vehicles per day (2012 count), of which roughly 1% are trucks.
How long is Grosvenor HWY over Swamp Raisin Drain?
The structure is 36 ft (11.1 m) long with a longest span of 36 ft (11 m).
Who owns Grosvenor HWY over Swamp Raisin Drain?
It is owned by the County Highway Agency.