US-31 SB over Grant Road
FairOceana County, Michigan · 1.5 MI SW of Shelby · Structure no. 000000000008346
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 115 ft
- 3 main spans
- Daily traffic
- 10,300
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
US-31 SB over Grant Road is a steel stringer/multi-beam or girder carrying US-31 SB over Grant Road in Oceana County, Michigan. It was built in 1975, so it is 50 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 10,300 vehicles a day, roughly 9% of them trucks, projected to reach 7,308 by 2018. The structure is 115 ft (35.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-31 SB over Grant Road built?
It was built in 1975, making it 50 years old in 2025.
What condition is US-31 SB over Grant Road 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 US-31 SB over Grant Road carry?
About 10,300 vehicles per day (2012 count), of which roughly 9% are trucks.
How long is US-31 SB over Grant Road?
The structure is 115 ft (35.1 m) long with a longest span of 57 ft (17.3 m) and a deck 45 ft wide.
Who owns US-31 SB over Grant Road?
It is owned by the State Highway Agency.