S-45-28 over Clapp Swamp Canal
FairWilliamsburg County, South Carolina · 5.0 MI W Cades · Structure no. 000000000005633
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected September 2023
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-45-28 over Clapp Swamp Canal is a concrete slab carrying S-45-28 over Clapp Swamp Canal in Williamsburg County, South Carolina. It was built in 1969, so it is 56 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 600 vehicles a day, roughly 9% of them trucks, projected to reach 876 by 2043. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 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-45-28 over Clapp Swamp Canal built?
It was built in 1969, making it 56 years old in 2025.
What condition is S-45-28 over Clapp Swamp Canal 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 September 2023.
How much traffic does S-45-28 over Clapp Swamp Canal carry?
About 600 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is S-45-28 over Clapp Swamp Canal?
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-45-28 over Clapp Swamp Canal?
It is owned by the State Highway Agency.