S-21-356 over High Hill Creek
PoorFlorence County, South Carolina · 7MI SE Darlington · Structure no. 000000000007774
- Built
- 1984
- 41 years old
- Condition
- Poor
- inspected October 2024
- Type
- Slab
- Concrete
- Length
- 105 ft
- 7 main spans
- Daily traffic
- 5,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-356 over High Hill Creek is a concrete slab carrying S-21-356 over High Hill Creek in Florence County, South Carolina. It was built in 1984, so it is 41 years old, younger 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 5,700 vehicles a day, roughly 13% of them trucks, projected to reach 3,819 by 2024. The structure is 105 ft (32 m) long and 33 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 S-21-356 over High Hill Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is S-21-356 over High Hill 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 October 2024.
How much traffic does S-21-356 over High Hill Creek carry?
About 5,700 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is S-21-356 over High Hill Creek?
The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.
Who owns S-21-356 over High Hill Creek?
It is owned by the State Highway Agency.