US 21/US 76 over RR CSXT & RR NS
FairRichland County, South Carolina · City of Columbia · Structure no. 000000000001977
- Built
- 1953
- 72 years old, rebuilt 1987
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 687 ft
- 1 main span
- Daily traffic
- 31,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21/US 76 over RR CSXT & RR NS is a steel stringer/multi-beam or girder carrying US 21/US 76 over RR CSXT & RR NS in Richland County, South Carolina. It was built in 1953 and reconstructed in 1987, so it is 72 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 5 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 31,400 vehicles a day, roughly 3% of them trucks, projected to reach 42,076 by 2043. The structure is 687 ft (209.4 m) long and 59 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 21/US 76 over RR CSXT & RR NS built?
It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1987.
What condition is US 21/US 76 over RR CSXT & RR NS 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 January 2024.
How much traffic does US 21/US 76 over RR CSXT & RR NS carry?
About 31,400 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 21/US 76 over RR CSXT & RR NS?
The structure is 687 ft (209.4 m) long with a longest span of 87 ft (26.5 m) and a deck 59 ft wide.
Who owns US 21/US 76 over RR CSXT & RR NS?
It is owned by the State Highway Agency.