North Bridge ST over Grand River-Channel
FairPosted for loadIonia County, Michigan · 0.32 M S M21 in Saranac · Structure no. 000000000004109
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 463 ft
- 6 main spans
- Daily traffic
- 7,300
- 2017 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
North Bridge ST over Grand River-Channel is a prestressed concrete box beam or girders - multiple carrying North Bridge ST over Grand River-Channel in Ionia County, Michigan. It was built in 1977, so it is 48 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. Its operating status is: posted for load restriction.
It carries about 7,300 vehicles a day, roughly 5% of them trucks, projected to reach 8,300 by 2037. The structure is 463 ft (141.1 m) long and 40 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North Bridge ST over Grand River-Channel built?
It was built in 1977, making it 48 years old in 2025.
What condition is North Bridge ST over Grand River-Channel 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 September 2023.
How much traffic does North Bridge ST over Grand River-Channel carry?
About 7,300 vehicles per day (2017 count), of which roughly 5% are trucks.
How long is North Bridge ST over Grand River-Channel?
The structure is 463 ft (141.1 m) long with a longest span of 76 ft (23.2 m) and a deck 40 ft wide.
Who owns North Bridge ST over Grand River-Channel?
It is owned by the City or Municipal Highway Agency.