US 321 over South Edisto River Swamp
FairBamberg County, South Carolina · 6MI N of Denmark · Structure no. 000000000001918
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected April 2024
- Type
- Tee Beam
- Concrete
- Length
- 216 ft
- 7 main spans
- Daily traffic
- 3,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 321 over South Edisto River Swamp is a concrete tee beam carrying US 321 over South Edisto River Swamp in Bamberg County, South Carolina. It was built in 1953, so it is 72 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 3,000 vehicles a day, roughly 14% of them trucks, projected to reach 5,220 by 2043. The structure is 216 ft (65.8 m) long and 27 ft wide. If it were closed, the detour would be 11.2 mi (18 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 US 321 over South Edisto River Swamp built?
It was built in 1953, making it 72 years old in 2025.
What condition is US 321 over South Edisto River 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 2024.
How much traffic does US 321 over South Edisto River Swamp carry?
About 3,000 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is US 321 over South Edisto River Swamp?
The structure is 216 ft (65.8 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.
Who owns US 321 over South Edisto River Swamp?
It is owned by the State Highway Agency.