US 321 over Big Cedar Creek
FairRichland County, South Carolina · 10 MI NW of Killian · Structure no. 000000000000972
- Built
- 1939
- 86 years old, rebuilt 1966
- Condition
- Fair
- inspected January 2024
- Type
- Tee Beam
- Concrete
- Length
- 230 ft
- 5 main spans
- Daily traffic
- 3,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 321 over Big Cedar Creek is a concrete tee beam carrying US 321 over Big Cedar Creek in Richland County, South Carolina. It was built in 1939 and reconstructed in 1966, so it is 86 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.
It carries about 3,600 vehicles a day, roughly 8% of them trucks, projected to reach 5,760 by 2043. The structure is 230 ft (70.1 m) long and 46 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 321 over Big Cedar Creek built?
It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1966.
What condition is US 321 over Big Cedar Creek 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 January 2024.
How much traffic does US 321 over Big Cedar Creek carry?
About 3,600 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 321 over Big Cedar Creek?
The structure is 230 ft (70.1 m) long with a longest span of 46 ft (14 m) and a deck 46 ft wide.
Who owns US 321 over Big Cedar Creek?
It is owned by the State Highway Agency.