S-17-31 over Sweet Swamp
FairDillon County, South Carolina · 10MI NW Dillon · Structure no. 000000000004754
- Built
- 1966
- 59 years old, rebuilt 1992
- Condition
- Fair
- inspected February 2024
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 125
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-17-31 over Sweet Swamp is a concrete slab carrying S-17-31 over Sweet Swamp in Dillon County, South Carolina. It was built in 1966 and reconstructed in 1992, so it is 59 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 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 45 ft (13.7 m) long and 28 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-17-31 over Sweet Swamp built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1992.
What condition is S-17-31 over Sweet 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 February 2024.
How much traffic does S-17-31 over Sweet Swamp carry?
About 125 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-17-31 over Sweet 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-17-31 over Sweet Swamp?
It is owned by the State Highway Agency.