Sc 174 over Dawhoo River
FairCharleston County, South Carolina · Edisto Island · Structure no. 000000000008719
- Built
- 1994
- 31 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 5,584 ft
- 3 main spans
- Daily traffic
- 5,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Sc 174 over Dawhoo River is a steel continuous stringer/multi-beam or girder carrying Sc 174 over Dawhoo River in Charleston County, South Carolina. It was built in 1994, so it is 31 years old, younger 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 5,400 vehicles a day, roughly 7% of them trucks, projected to reach 8,586 by 2043. The structure is 5,584 ft (1,702 m) long and 57 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sc 174 over Dawhoo River built?
It was built in 1994, making it 31 years old in 2025.
What condition is Sc 174 over Dawhoo River 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 August 2024.
How much traffic does Sc 174 over Dawhoo River carry?
About 5,400 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Sc 174 over Dawhoo River?
The structure is 5,584 ft (1,702 m) long with a longest span of 200 ft (61 m) and a deck 57 ft wide.
Who owns Sc 174 over Dawhoo River?
It is owned by the State Highway Agency.