I-20 WB over US 521
FairKershaw County, South Carolina · 1.5 MI S of Camden · Structure no. 000000000006125
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 296 ft
- 4 main spans
- Daily traffic
- 22,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-20 WB over US 521 is a steel stringer/multi-beam or girder carrying I-20 WB over US 521 in Kershaw County, South Carolina. It was built in 1972, so it is 53 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 22,100 vehicles a day, roughly 16% of them trucks, projected to reach 35,360 by 2043. The structure is 296 ft (90.2 m) long and 43 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-20 WB over US 521 built?
It was built in 1972, making it 53 years old in 2025.
What condition is I-20 WB over US 521 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 I-20 WB over US 521 carry?
About 22,100 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I-20 WB over US 521?
The structure is 296 ft (90.2 m) long with a longest span of 96 ft (29.3 m) and a deck 43 ft wide.
Who owns I-20 WB over US 521?
It is owned by the State Highway Agency.