Schoenherr RD over Big Sable River
FairMason County, Michigan · 1 MI N of Freesoil RD · Structure no. 000000000013635
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Steel
- Length
- 35 ft
- 2 main spans
- Daily traffic
- 100
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Schoenherr RD over Big Sable River is a steel culvert carrying Schoenherr RD over Big Sable River in Mason County, Michigan. It was built in 1960, so it is 65 years old, older 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2031. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Schoenherr RD over Big Sable River built?
It was built in 1960, making it 65 years old in 2025.
What condition is Schoenherr RD over Big Sable 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 August 2024.
How much traffic does Schoenherr RD over Big Sable River carry?
About 100 vehicles per day (2011 count), of which roughly 5% are trucks.
How long is Schoenherr RD over Big Sable River?
The structure is 35 ft (10.8 m) long with a longest span of 15 ft (4.5 m).
Who owns Schoenherr RD over Big Sable River?
It is owned by the County Highway Agency.