S-21-68 over Sparrow Swamp
FairFlorence County, South Carolina · 6 MI SE Timmonsville · Structure no. 000000000006294
- Built
- 1973
- 52 years old, rebuilt 1997
- Condition
- Fair
- inspected April 2023
- Type
- Slab
- Concrete
- Length
- 90 ft
- 6 main spans
- Daily traffic
- 350
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-68 over Sparrow Swamp is a concrete slab carrying S-21-68 over Sparrow Swamp in Florence County, South Carolina. It was built in 1973 and reconstructed in 1997, so it is 52 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 350 vehicles a day, roughly 5% of them trucks, projected to reach 448 by 2043. The structure is 90 ft (27.4 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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-21-68 over Sparrow Swamp built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1997.
What condition is S-21-68 over Sparrow 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 April 2023.
How much traffic does S-21-68 over Sparrow Swamp carry?
About 350 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-21-68 over Sparrow Swamp?
The structure is 90 ft (27.4 m) long with a longest span of 15 ft (4.6 m) and a deck 34 ft wide.
Who owns S-21-68 over Sparrow Swamp?
It is owned by the State Highway Agency.