8 Mile Road over Tobin Drain
GoodWashtenaw County, Michigan · Northfield Twp Sec 3 · Structure no. 000000000011011
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 468
- 2005 count
- Owner
- County
- County Highway Agency
About this bridge
8 Mile Road over Tobin Drain is a prestressed concrete box beam or girders - multiple carrying 8 Mile Road over Tobin Drain in Washtenaw County, Michigan. It was built in 1999, so it is 26 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 468 vehicles a day, roughly 4% of them trucks, projected to reach 845 by 2025. The structure is 52 ft (16 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| 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 8 Mile Road over Tobin Drain built?
It was built in 1999, making it 26 years old in 2025.
What condition is 8 Mile Road over Tobin 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 June 2023.
How much traffic does 8 Mile Road over Tobin Drain carry?
About 468 vehicles per day (2005 count), of which roughly 4% are trucks.
How long is 8 Mile Road over Tobin Drain?
The structure is 52 ft (16 m) long with a longest span of 52 ft (16 m) and a deck 31 ft wide.
Who owns 8 Mile Road over Tobin Drain?
It is owned by the County Highway Agency.