M-89 over Schnable River
FairAllegan County, Michigan · 4.8 MI NW of Otsego · Structure no. 000000000000090
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 54 ft
- 1 main span
- Daily traffic
- 12,100
- 2013 count
- Owner
- State
- State Highway Agency
About this bridge
M-89 over Schnable River is a prestressed concrete stringer/multi-beam or girder carrying M-89 over Schnable River in Allegan County, Michigan. It was built in 1988, so it is 37 years old, younger 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 6 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 12,100 vehicles a day, roughly 5% of them trucks, projected to reach 15,713 by 2018. The structure is 54 ft (16.5 m) long and 51 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M-89 over Schnable River built?
It was built in 1988, making it 37 years old in 2025.
What condition is M-89 over Schnable River 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 June 2023.
How much traffic does M-89 over Schnable River carry?
About 12,100 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is M-89 over Schnable River?
The structure is 54 ft (16.5 m) long with a longest span of 52 ft (16 m) and a deck 51 ft wide.
Who owns M-89 over Schnable River?
It is owned by the State Highway Agency.