S-21-918 over Polk Swamp
Fair Condition63 years old1,750 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 3mi E Florence |
| Carries | S-21-918 |
| Crosses | Polk Swamp |
| Coordinates | 34.18649, -79.66781 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 44.9 ft (13.7 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 117.8 sq m |
| Main Spans | 3 |
| Year Built | 1963 (reconstructed 2000) |
Traffic
| Avg Daily Traffic | 1,750 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000004121 |