M-100 over Thornapple Drain
GoodEaton County, Michigan · 3.5 MI N of I-69 · Structure no. 000000000002283
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected July 2023
- Type
- Culvert
- Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 5,425
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
M-100 over Thornapple Drain is a concrete culvert carrying M-100 over Thornapple Drain in Eaton County, Michigan. It was built in 2015, so it is 10 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 5,425 vehicles a day, roughly 4% of them trucks, projected to reach 6,300 by 2035. The structure is 34 ft (10.4 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M-100 over Thornapple Drain built?
It was built in 2015, making it 10 years old in 2025.
What condition is M-100 over Thornapple 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 July 2023.
How much traffic does M-100 over Thornapple Drain carry?
About 5,425 vehicles per day (2015 count), of which roughly 4% are trucks.
How long is M-100 over Thornapple Drain?
The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m).
Who owns M-100 over Thornapple Drain?
It is owned by the State Highway Agency.