S-21-13 over Polk Swamp
Fair Condition56 years old2,600 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 7 Mi E Florence |
| Carries | S-21-13 |
| Crosses | Polk Swamp |
| Coordinates | 34.14813, -79.64426 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 60.0 ft (18.3 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 153.7 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 2,600 (2023) |
| Truck Traffic | 7% |
| 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 | 000000000005721 |