Galbraith Line RD over Black River
PoorPosted for loadSanilac County, Michigan · Sec 20-29 Worth Twp · Structure no. 000000000009520
- Built
- 1985
- 40 years old
- Condition
- Poor
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 245 ft
- 3 main spans
- Daily traffic
- 1,761
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Galbraith Line RD over Black River is a prestressed concrete box beam or girders - multiple carrying Galbraith Line RD over Black River in Sanilac County, Michigan. It was built in 1985, so it is 40 years old, younger than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 1,761 vehicles a day, roughly 10% of them trucks, projected to reach 2,366 by 2030. The structure is 245 ft (74.7 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Galbraith Line RD over Black River built?
It was built in 1985, making it 40 years old in 2025.
What condition is Galbraith Line RD over Black River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Galbraith Line RD over Black River carry?
About 1,761 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Galbraith Line RD over Black River?
The structure is 245 ft (74.7 m) long with a longest span of 81 ft (24.8 m) and a deck 44 ft wide.
Who owns Galbraith Line RD over Black River?
It is owned by the County Highway Agency.