Sc 421 over Horse Creek
PoorAiken County, South Carolina · 0.5 MI E Clearwater · Structure no. 000000000002448
- Built
- 1957
- 68 years old, rebuilt 1972
- Condition
- Poor
- inspected February 2025
- Type
- Tee Beam
- Concrete
- Length
- 150 ft
- 3 main spans
- Daily traffic
- 9,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Sc 421 over Horse Creek is a concrete tee beam carrying Sc 421 over Horse Creek in Aiken County, South Carolina. It was built in 1957 and reconstructed in 1972, so it is 68 years old, older than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 9,000 vehicles a day, roughly 4% of them trucks, projected to reach 9,270 by 2043. The structure is 150 ft (45.7 m) long and 67 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Sc 421 over Horse Creek built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1972.
What condition is Sc 421 over Horse Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.
How much traffic does Sc 421 over Horse Creek carry?
About 9,000 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Sc 421 over Horse Creek?
The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 67 ft wide.
Who owns Sc 421 over Horse Creek?
It is owned by the State Highway Agency.