S-21-596 over Br-Big Swamp
GoodFlorence County, South Carolina · 3 MI NW Salem · Structure no. 000000000008847
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 74 ft
- 3 main spans
- Daily traffic
- 650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-596 over Br-Big Swamp is a concrete continuous slab carrying S-21-596 over Br-Big Swamp in Florence County, South Carolina. It was built in 1995, so it is 30 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 650 vehicles a day, roughly 8% of them trucks, projected to reach 949 by 2043. The structure is 74 ft (22.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-21-596 over Br-Big Swamp built?
It was built in 1995, making it 30 years old in 2025.
What condition is S-21-596 over Br-Big Swamp in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.
How much traffic does S-21-596 over Br-Big Swamp carry?
About 650 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is S-21-596 over Br-Big Swamp?
The structure is 74 ft (22.6 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.
Who owns S-21-596 over Br-Big Swamp?
It is owned by the State Highway Agency.