US 321 over Coosawhatchie River
FairHampton County, South Carolina · 3 MI S of Fairfax · Structure no. 000000000001492
- Built
- 1948
- 77 years old, rebuilt 1969
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete
- Length
- 186 ft
- 8 main spans
- Daily traffic
- 2,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 321 over Coosawhatchie River is a concrete slab carrying US 321 over Coosawhatchie River in Hampton County, South Carolina. It was built in 1948 and reconstructed in 1969, so it is 77 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 2,100 vehicles a day, roughly 31% of them trucks, projected to reach 3,654 by 2043. The structure is 186 ft (56.7 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 321 over Coosawhatchie River built?
It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1969.
What condition is US 321 over Coosawhatchie River 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 March 2024.
How much traffic does US 321 over Coosawhatchie River carry?
About 2,100 vehicles per day (2023 count), of which roughly 31% are trucks.
How long is US 321 over Coosawhatchie River?
The structure is 186 ft (56.7 m) long with a longest span of 26 ft (7.8 m) and a deck 48 ft wide.
Who owns US 321 over Coosawhatchie River?
It is owned by the State Highway Agency.