US 78 over Polk Swamp
Fair Condition77 years old4,700 vehicles/day
Location
| State | South Carolina |
| County | Dorchester |
| Location | 4 Mi NW Of ST George |
| Carries | US 78 |
| Crosses | Polk Swamp |
| Coordinates | 33.20020, -80.62963 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 111.9 ft (34.1 m) |
| Max Span | 27.9 ft (8.5 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 300.1 sq m |
| Main Spans | 4 |
| Year Built | 1949 |
Traffic
| Avg Daily Traffic | 4,700 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000001621 |