S-21-55 over Sparrow Swamp
Fair Condition36 years old950 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 5mi NW Of Effingham |
| Carries | S-21-55 |
| Crosses | Sparrow Swamp |
| Coordinates | 34.02936, -79.81599 |
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 | 120.1 ft (36.6 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 38.4 ft (11.7 m) |
| Deck Area | 428.2 sq m |
| Main Spans | 8 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 950 (2023) |
| Truck Traffic | 7% |
| 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 | 000000000008350 |