US 17 Alt over Unnamed Stream
GoodColleton County, South Carolina · 1 MI SE of Cottageville · Structure no. 000000000000779
- Built
- 1937
- 88 years old
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 8,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 17 Alt over Unnamed Stream is a concrete culvert carrying US 17 Alt over Unnamed Stream in Colleton County, South Carolina. It was built in 1937, so it is 88 years old, older than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 8,000 vehicles a day, roughly 12% of them trucks, projected to reach 12,720 by 2043. The structure is 21 ft (6.3 m) long and 38 ft wide. If it were closed, the detour would be 11.2 mi (18 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 17 Alt over Unnamed Stream built?
It was built in 1937, making it 88 years old in 2025.
What condition is US 17 Alt over Unnamed Stream in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.
How much traffic does US 17 Alt over Unnamed Stream carry?
About 8,000 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is US 17 Alt over Unnamed Stream?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.
Who owns US 17 Alt over Unnamed Stream?
It is owned by the State Highway Agency.