US 21 over Pen Branch
FairOrangeburg County, South Carolina · 0.25MI S of Branchville · Structure no. 000000000000061
- Built
- 1958
- 67 years old, rebuilt 1970
- Condition
- Fair
- inspected February 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 1,650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21 over Pen Branch is a concrete culvert carrying US 21 over Pen Branch in Orangeburg County, South Carolina. It was built in 1958 and reconstructed in 1970, so it is 67 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 6 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 1,650 vehicles a day, roughly 16% of them trucks, projected to reach 2,624 by 2043. The structure is 21 ft (6.3 m) long and 53 ft wide. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 21 over Pen Branch built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1970.
What condition is US 21 over Pen Branch 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 February 2024.
How much traffic does US 21 over Pen Branch carry?
About 1,650 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is US 21 over Pen Branch?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 53 ft wide.
Who owns US 21 over Pen Branch?
It is owned by the State Highway Agency.