I-20 over U.S. 1 & RR CSXT
FairRichland County, South Carolina · Dentsville · Structure no. 000000000004643
- Built
- 1965
- 60 years old, rebuilt 1988
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 389 ft
- 6 main spans
- Daily traffic
- 87,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-20 over U.S. 1 & RR CSXT is a steel stringer/multi-beam or girder carrying I-20 over U.S. 1 & RR CSXT in Richland County, South Carolina. It was built in 1965 and reconstructed in 1988, so it is 60 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 87,800 vehicles a day, roughly 10% of them trucks, projected to reach 113,262 by 2043. The structure is 389 ft (118.6 m) long and 123 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-20 over U.S. 1 & RR CSXT built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.
What condition is I-20 over U.S. 1 & RR CSXT 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 I-20 over U.S. 1 & RR CSXT carry?
About 87,800 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is I-20 over U.S. 1 & RR CSXT?
The structure is 389 ft (118.6 m) long with a longest span of 70 ft (21.3 m) and a deck 123 ft wide.
Who owns I-20 over U.S. 1 & RR CSXT?
It is owned by the State Highway Agency.