US 378 over Cypress Swamp
GoodFlorence County, South Carolina · 1MI NW of Lake City · Structure no. 000000000002525
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 90 ft
- 3 main spans
- Daily traffic
- 6,900
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 378 over Cypress Swamp is a concrete continuous slab carrying US 378 over Cypress Swamp in Florence County, South Carolina. It was built in 2004, so it is 21 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 6,900 vehicles a day, roughly 12% of them trucks, projected to reach 10,764 by 2043. The structure is 90 ft (27.4 m) long and 98 ft wide. If it were closed, the detour would be 1.2 mi (2 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 US 378 over Cypress Swamp built?
It was built in 2004, making it 21 years old in 2025.
What condition is US 378 over Cypress Swamp 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 March 2024.
How much traffic does US 378 over Cypress Swamp carry?
About 6,900 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is US 378 over Cypress Swamp?
The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 98 ft wide.
Who owns US 378 over Cypress Swamp?
It is owned by the State Highway Agency.