French Line Road over Black River I/C Drain
FairSanilac County, Michigan · Sec 23-26 Washington Twp · Structure no. 000000000009648
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 130 ft
- 1 main span
- Daily traffic
- 510
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
French Line Road over Black River I/C Drain is a prestressed concrete box beam or girders - multiple carrying French Line Road over Black River I/C Drain in Sanilac County, Michigan. It was built in 1992, so it is 33 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 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 510 vehicles a day, roughly 10% of them trucks, projected to reach 920 by 2030. The structure is 130 ft (39.6 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was French Line Road over Black River I/C Drain built?
It was built in 1992, making it 33 years old in 2025.
What condition is French Line Road over Black River I/C 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 May 2024.
How much traffic does French Line Road over Black River I/C Drain carry?
About 510 vehicles per day (2010 count), of which roughly 10% are trucks.
How long is French Line Road over Black River I/C Drain?
The structure is 130 ft (39.6 m) long with a longest span of 129 ft (39.2 m) and a deck 33 ft wide.
Who owns French Line Road over Black River I/C Drain?
It is owned by the County Highway Agency.