US 521 over Ox Swamp
Fair Condition96 years old8,700 vehicles/day
Location
| State | South Carolina |
| County | Clarendon |
| Location | 0.5mi E Of Manning |
| Carries | US 521 |
| Crosses | Ox Swamp |
| Coordinates | 33.69207, -80.20063 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 174.9 ft (53.3 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 49.5 ft (15.1 m) |
| Deck Area | 804.8 sq m |
| Main Spans | 7 |
| Year Built | 1930 (reconstructed 1964) |
Traffic
| Avg Daily Traffic | 8,700 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000000404 |