B Drive North over Kalamazoo River
FairPosted for loadCalhoun County, Michigan · 1/2 MI S of Marengo · Structure no. 000000000001369
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Wood or Timber
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 259
- 1994 count
- Owner
- County
- County Highway Agency
About this bridge
B Drive North over Kalamazoo River is a wood or timber slab carrying B Drive North over Kalamazoo River in Calhoun County, Michigan. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.
It carries about 259 vehicles a day, roughly 5% of them trucks, projected to reach 483 by 2024. The structure is 78 ft (23.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 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 B Drive North over Kalamazoo River built?
It was built in 1969, making it 56 years old in 2025.
What condition is B Drive North over Kalamazoo 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 September 2024.
How much traffic does B Drive North over Kalamazoo River carry?
About 259 vehicles per day (1994 count), of which roughly 5% are trucks.
How long is B Drive North over Kalamazoo River?
The structure is 78 ft (23.7 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.
Who owns B Drive North over Kalamazoo River?
It is owned by the County Highway Agency.