S-3-18 over Caw Caw Swamp
FairAllendale County, South Carolina · 3MI S of Fairfax · Structure no. 000000000006214
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Concrete
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 225
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-3-18 over Caw Caw Swamp is a concrete slab carrying S-3-18 over Caw Caw Swamp in Allendale County, South Carolina. It was built in 1973, 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 225 vehicles a day, roughly 14% of them trucks, projected to reach 329 by 2043. The structure is 30 ft (9.1 m) long and 33 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-3-18 over Caw Caw Swamp built?
It was built in 1973, making it 52 years old in 2025.
What condition is S-3-18 over Caw Caw 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 2023.
How much traffic does S-3-18 over Caw Caw Swamp carry?
About 225 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is S-3-18 over Caw Caw Swamp?
The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.
Who owns S-3-18 over Caw Caw Swamp?
It is owned by the State Highway Agency.