US 321 over Sandy River
FairPosted for loadChester County, South Carolina · 2.3MI N of Chester · Structure no. 000000000001018
- Built
- 1940
- 85 years old, rebuilt 2024
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 150 ft
- 6 main spans
- Daily traffic
- 1,750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 321 over Sandy River is a steel continuous stringer/multi-beam or girder carrying US 321 over Sandy River in Chester County, South Carolina. It was built in 1940 and reconstructed in 2024, so it is 85 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 1,750 vehicles a day, roughly 8% of them trucks, projected to reach 2,783 by 2043. The structure is 150 ft (45.7 m) long and 26 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Sandy River built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2024.
What condition is US 321 over Sandy 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 February 2024.
How much traffic does US 321 over Sandy River carry?
About 1,750 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 321 over Sandy River?
The structure is 150 ft (45.7 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.
Who owns US 321 over Sandy River?
It is owned by the State Highway Agency.