US 76 over Black River Swamp
FairSumter County, South Carolina · 1 MI NE of Mayesville · Structure no. 000000000001840
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 150 ft
- 5 main spans
- Daily traffic
- 1,550
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 76 over Black River Swamp is a concrete continuous slab carrying US 76 over Black River Swamp in Sumter County, South Carolina. It was built in 2004, so it is 21 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 1,550 vehicles a day, roughly 12% of them trucks, projected to reach 2,465 by 2043. The structure is 150 ft (45.7 m) long and 47 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 76 over Black River Swamp built?
It was built in 2004, making it 21 years old in 2025.
What condition is US 76 over Black River Swamp 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 US 76 over Black River Swamp carry?
About 1,550 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is US 76 over Black River Swamp?
The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.
Who owns US 76 over Black River Swamp?
It is owned by the State Highway Agency.