US 21 SB over S-46-697 & RR Lc
FairYork County, South Carolina · 6.9 MI S of Rock Hill · Structure no. 000000000004907
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 4 main spans
- Daily traffic
- 12,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21 SB over S-46-697 & RR Lc is a prestressed concrete stringer/multi-beam or girder carrying US 21 SB over S-46-697 & RR Lc in York County, South Carolina. It was built in 1966, so it is 59 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 12,100 vehicles a day, roughly 8% of them trucks, projected to reach 16,093 by 2043. The structure is 208 ft (63.4 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| 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 SB over S-46-697 & RR Lc built?
It was built in 1966, making it 59 years old in 2025.
What condition is US 21 SB over S-46-697 & RR Lc 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 August 2023.
How much traffic does US 21 SB over S-46-697 & RR Lc carry?
About 12,100 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 21 SB over S-46-697 & RR Lc?
The structure is 208 ft (63.4 m) long with a longest span of 52 ft (15.8 m) and a deck 39 ft wide.
Who owns US 21 SB over S-46-697 & RR Lc?
It is owned by the State Highway Agency.