S-163/SUMMERS DR over Unknown Creek
GoodDorchester County, South Carolina · 10.0 MI SW Summerville · Structure no. 000000000001700
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-163/SUMMERS DR over Unknown Creek is a prestressed concrete box beam or girders - multiple carrying S-163/SUMMERS DR over Unknown Creek in Dorchester County, South Carolina. It was built in 2011, so it is 14 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 750 vehicles a day, roughly 5% of them trucks, projected to reach 960 by 2043. The structure is 30 ft (9.1 m) long and 36 ft wide. If it were closed, the detour would be 16.8 mi (27 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-163/SUMMERS DR over Unknown Creek built?
It was built in 2011, making it 14 years old in 2025.
What condition is S-163/SUMMERS DR over Unknown Creek 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 April 2023.
How much traffic does S-163/SUMMERS DR over Unknown Creek carry?
About 750 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-163/SUMMERS DR over Unknown Creek?
The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.
Who owns S-163/SUMMERS DR over Unknown Creek?
It is owned by the State Highway Agency.