S-20-258 over Thorntree Creek
PoorClosed to trafficFairfield County, South Carolina · 16MI SE Winnsboro · Structure no. 000000000003867
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected May 2024
- Type
- Slab
- Concrete
- Length
- 150 ft
- 10 main spans
- Daily traffic
- 125
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-20-258 over Thorntree Creek is a concrete slab carrying S-20-258 over Thorntree Creek in Fairfield County, South Carolina. It was built in 1962, so it is 63 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 3 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. Its operating status is: closed to all traffic.
It carries about 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 150 ft (45.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-20-258 over Thorntree Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is S-20-258 over Thorntree 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 May 2024.
How much traffic does S-20-258 over Thorntree Creek carry?
About 125 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-20-258 over Thorntree Creek?
The structure is 150 ft (45.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.
Who owns S-20-258 over Thorntree Creek?
It is owned by the State Highway Agency.