S-6-20 over Three Runs Creek
FairBarnwell County, South Carolina · 8MI SW Barnwell · Structure no. 000000000006615
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete
- Length
- 135 ft
- 9 main spans
- Daily traffic
- 550
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-6-20 over Three Runs Creek is a concrete slab carrying S-6-20 over Three Runs Creek in Barnwell County, South Carolina. It was built in 1975, so it is 50 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 550 vehicles a day, roughly 22% of them trucks, projected to reach 803 by 2043. The structure is 135 ft (41.1 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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-6-20 over Three Runs Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is S-6-20 over Three Runs 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 June 2023.
How much traffic does S-6-20 over Three Runs Creek carry?
About 550 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is S-6-20 over Three Runs Creek?
The structure is 135 ft (41.1 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.
Who owns S-6-20 over Three Runs Creek?
It is owned by the State Highway Agency.