US 321 over Birds Branch
FairBamberg County, South Carolina · 2MI S of Olar · Structure no. 000000000001008
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 32 ft
- 3 main spans
- Daily traffic
- 1,250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 321 over Birds Branch is a concrete culvert carrying US 321 over Birds Branch in Bamberg County, South Carolina. It was built in 1940, so it is 85 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 1,250 vehicles a day, roughly 31% of them trucks, projected to reach 2,175 by 2043. The structure is 32 ft (9.8 m) long and 38 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 | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 321 over Birds Branch built?
It was built in 1940, making it 85 years old in 2025.
What condition is US 321 over Birds 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 April 2024.
How much traffic does US 321 over Birds Branch carry?
About 1,250 vehicles per day (2023 count), of which roughly 31% are trucks.
How long is US 321 over Birds Branch?
The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.
Who owns US 321 over Birds Branch?
It is owned by the State Highway Agency.