US 78/W 5th ST N over Great Cypress Swamp #6
FairDorchester County, South Carolina · 6.4 MI NW of Summerville · Structure no. 000000000000339
- Built
- 1919
- 106 years old, rebuilt 1934
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 7,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 78/W 5th ST N over Great Cypress Swamp #6 is a concrete culvert carrying US 78/W 5th ST N over Great Cypress Swamp #6 in Dorchester County, South Carolina. It was built in 1919 and reconstructed in 1934, so it is 106 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 7,800 vehicles a day, roughly 10% of them trucks, projected to reach 11,154 by 2043. The structure is 21 ft (6.5 m) long and 34 ft wide. If it were closed, the detour would be 13 mi (21 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 78/W 5th ST N over Great Cypress Swamp #6 built?
It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1934.
What condition is US 78/W 5th ST N over Great Cypress Swamp #6 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 April 2024.
How much traffic does US 78/W 5th ST N over Great Cypress Swamp #6 carry?
About 7,800 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 78/W 5th ST N over Great Cypress Swamp #6?
The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.
Who owns US 78/W 5th ST N over Great Cypress Swamp #6?
It is owned by the State Highway Agency.