S-21-501 over Br-lake Swamp
Fair Condition67 years old800 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 4.0 Mi SW Effingham |
| Carries | S-21-501 |
| Crosses | Br-lake Swamp |
| Coordinates | 34.00738, -79.82728 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 78.3 sq m |
| Main Spans | 2 |
| Year Built | 1959 (reconstructed 1991) |
Traffic
| Avg Daily Traffic | 800 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002953 |