US-31 Br NB over S Br Muskegon River
FairMuskegon County, Michigan · In Muskegon · Structure no. 000000000007634
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 104 ft
- 3 main spans
- Daily traffic
- 9,943
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-31 Br NB over S Br Muskegon River is a prestressed concrete stringer/multi-beam or girder carrying US-31 Br NB over S Br Muskegon River in Muskegon County, Michigan. It was built in 1964, so it is 61 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 5 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 9,943 vehicles a day, roughly 5% of them trucks, projected to reach 11,061 by 2018. The structure is 104 ft (31.7 m) long and 67 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-31 Br NB over S Br Muskegon River built?
It was built in 1964, making it 61 years old in 2025.
What condition is US-31 Br NB over S Br Muskegon 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 April 2024.
How much traffic does US-31 Br NB over S Br Muskegon River carry?
About 9,943 vehicles per day (2007 count), of which roughly 5% are trucks.
How long is US-31 Br NB over S Br Muskegon River?
The structure is 104 ft (31.7 m) long with a longest span of 37 ft (11.2 m) and a deck 67 ft wide.
Who owns US-31 Br NB over S Br Muskegon River?
It is owned by the State Highway Agency.