US 21 over I-95
FairColleton County, South Carolina · 14.2 MI SW Walterboro · Structure no. 000000000005274
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 328 ft
- 5 main spans
- Daily traffic
- 1,350
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21 over I-95 is a steel stringer/multi-beam or girder carrying US 21 over I-95 in Colleton County, South Carolina. It was built in 1968, so it is 57 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 1,350 vehicles a day, roughly 28% of them trucks, projected to reach 2,147 by 2043. The structure is 328 ft (100 m) long and 48 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 21 over I-95 built?
It was built in 1968, making it 57 years old in 2025.
What condition is US 21 over I-95 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 March 2024.
How much traffic does US 21 over I-95 carry?
About 1,350 vehicles per day (2023 count), of which roughly 28% are trucks.
How long is US 21 over I-95?
The structure is 328 ft (100 m) long with a longest span of 93 ft (28.3 m) and a deck 48 ft wide.
Who owns US 21 over I-95?
It is owned by the State Highway Agency.