S-45-385 over Br-Thorntree Swamp
FairWilliamsburg County, South Carolina · In Lane · Structure no. 000000000006589
- Built
- 1974
- 51 years old, rebuilt 1999
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 425
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-45-385 over Br-Thorntree Swamp is a concrete slab carrying S-45-385 over Br-Thorntree Swamp in Williamsburg County, South Carolina. It was built in 1974 and reconstructed in 1999, so it is 51 years old, older 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 425 vehicles a day, roughly 5% of them trucks, projected to reach 621 by 2043. The structure is 45 ft (13.7 m) long and 28 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-45-385 over Br-Thorntree Swamp built?
It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1999.
What condition is S-45-385 over Br-Thorntree 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 August 2024.
How much traffic does S-45-385 over Br-Thorntree Swamp carry?
About 425 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-45-385 over Br-Thorntree Swamp?
The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.
Who owns S-45-385 over Br-Thorntree Swamp?
It is owned by the State Highway Agency.