US 521 NB over Stream
FairLancaster County, South Carolina · 7.2 MI N of Lancaster · Structure no. 000000000006314
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected September 2024
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 12,850
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 521 NB over Stream is a concrete culvert carrying US 521 NB over Stream in Lancaster County, South Carolina. It was built in 1973, so it is 52 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 12,850 vehicles a day, roughly 7% of them trucks, projected to reach 22,359 by 2043. The structure is 23 ft (7 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 521 NB over Stream built?
It was built in 1973, making it 52 years old in 2025.
What condition is US 521 NB over Stream 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 Stream carry?
About 12,850 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is US 521 NB over Stream?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).
Who owns US 521 NB over Stream?
It is owned by the State Highway Agency.