Shepherd Road over Onion Creek Drain
FairIsabella County, Michigan · 0.1M S NE Cor Sec 20 T14N · Structure no. 000000000004313
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 4,001
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Shepherd Road over Onion Creek Drain is a prestressed concrete box beam or girders - multiple carrying Shepherd Road over Onion Creek Drain in Isabella County, Michigan. It was built in 1995, so it is 30 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 4,001 vehicles a day, roughly 2% of them trucks, projected to reach 4,883 by 2038. The structure is 43 ft (13.1 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Shepherd Road over Onion Creek Drain built?
It was built in 1995, making it 30 years old in 2025.
What condition is Shepherd Road over Onion Creek Drain 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 April 2024.
How much traffic does Shepherd Road over Onion Creek Drain carry?
About 4,001 vehicles per day (2018 count), of which roughly 2% are trucks.
How long is Shepherd Road over Onion Creek Drain?
The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.7 m) and a deck 34 ft wide.
Who owns Shepherd Road over Onion Creek Drain?
It is owned by the County Highway Agency.