US 521 NB over Gills Creek
FairLancaster County, South Carolina · 1.5 MI N of Lancaster · Structure no. 000000000004582
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 13,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 521 NB over Gills Creek is a prestressed concrete stringer/multi-beam or girder carrying US 521 NB over Gills Creek in Lancaster County, South Carolina. It was built in 1965, 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 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 13,700 vehicles a day, roughly 10% of them trucks, projected to reach 21,372 by 2043. The structure is 120 ft (36.6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 521 NB over Gills Creek built?
It was built in 1965, making it 60 years old in 2025.
What condition is US 521 NB over Gills Creek 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 September 2024.
How much traffic does US 521 NB over Gills Creek carry?
About 13,700 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 521 NB over Gills Creek?
The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 39 ft wide.
Who owns US 521 NB over Gills Creek?
It is owned by the State Highway Agency.