US 21 NB over Beaufort River
FairBeaufort County, South Carolina · Southeast of Beaufort · Structure no. 000000000009957
- Built
- 2012
- 13 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 4,211 ft
- 23 main spans
- Daily traffic
- 14,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21 NB over Beaufort River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 21 NB over Beaufort River in Beaufort County, South Carolina. It was built in 2012, so it is 13 years old, younger 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 14,400 vehicles a day, roughly 6% of them trucks, projected to reach 16,128 by 2043. The structure is 4,211 ft (1,283.5 m) long and 47 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 21 NB over Beaufort River built?
It was built in 2012, making it 13 years old in 2025.
What condition is US 21 NB over Beaufort River 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 September 2024.
How much traffic does US 21 NB over Beaufort River carry?
About 14,400 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 21 NB over Beaufort River?
The structure is 4,211 ft (1,283.5 m) long with a longest span of 170 ft (51.8 m) and a deck 47 ft wide.
Who owns US 21 NB over Beaufort River?
It is owned by the State Highway Agency.