S-351/ASHTON RD over Willow Swamp
GoodColleton County, South Carolina · 21.3 MI NW Walterboro · Structure no. 000000000004094
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 175
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-351/ASHTON RD over Willow Swamp is a prestressed concrete box beam or girders - multiple carrying S-351/ASHTON RD over Willow Swamp in Colleton County, South Carolina. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 175 vehicles a day, roughly 5% of them trucks, projected to reach 224 by 2043. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-351/ASHTON RD over Willow Swamp built?
It was built in 2016, making it 9 years old in 2025.
What condition is S-351/ASHTON RD over Willow 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 February 2025.
How much traffic does S-351/ASHTON RD over Willow Swamp carry?
About 175 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-351/ASHTON RD over Willow Swamp?
The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.
Who owns S-351/ASHTON RD over Willow Swamp?
It is owned by the State Highway Agency.