US 378 WB over Black River
FairSumter County, South Carolina · 10 MI E of Sumter · Structure no. 000000000001569
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 240 ft
- 8 main spans
- Daily traffic
- 5,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 378 WB over Black River is a concrete continuous slab carrying US 378 WB over Black River in Sumter County, South Carolina. It was built in 2006, so it is 19 years old, younger than the South Carolina average of 48 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.
It carries about 5,600 vehicles a day, roughly 13% of them trucks, projected to reach 9,744 by 2043. The structure is 240 ft (73.2 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 378 WB over Black River built?
It was built in 2006, making it 19 years old in 2025.
What condition is US 378 WB over Black 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 June 2024.
How much traffic does US 378 WB over Black River carry?
About 5,600 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is US 378 WB over Black River?
The structure is 240 ft (73.2 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.
Who owns US 378 WB over Black River?
It is owned by the State Highway Agency.