S-12-30 over Rock Branch
GoodChester County, South Carolina · 5MI SW Chester · Structure no. 000000000007661
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 350
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-12-30 over Rock Branch is a concrete culvert carrying S-12-30 over Rock Branch in Chester County, South Carolina. It was built in 1983, so it is 42 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 350 vehicles a day, roughly 4% of them trucks, projected to reach 487 by 2025. The structure is 22 ft (6.7 m) long and 75 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-12-30 over Rock Branch built?
It was built in 1983, making it 42 years old in 2025.
What condition is S-12-30 over Rock Branch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.
How much traffic does S-12-30 over Rock Branch carry?
About 350 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is S-12-30 over Rock Branch?
The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m) and a deck 75 ft wide.
Who owns S-12-30 over Rock Branch?
It is owned by the State Highway Agency.