US 78 over Four Hole Swamp
Poor Condition78 years old9,900 vehicles/day
Location
| State | South Carolina |
| County | Dorchester |
| Location | 3.8 Mi NW Of Ridgeville |
| Carries | US 78 |
| Crosses | Four Hole Swamp |
| Coordinates | 33.14164, -80.34837 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 374.0 ft (114 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 1162.8 sq m |
| Main Spans | 17 |
| Year Built | 1948 |
Traffic
| Avg Daily Traffic | 9,900 (2023) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000001454 |