S-21-105 over Big Swamp
Fair Condition30 years old650 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 1.5mi N Hyman |
| Carries | S-21-105 |
| Crosses | Big Swamp |
| Coordinates | 34.01798, -79.60215 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 74.1 ft (22.6 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 36.7 ft (11.2 m) |
| Deck Area | 253.1 sq m |
| Main Spans | 3 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 650 (2023) |
| Truck Traffic | 14% |
| 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 | 000000000009004 |