S-31-99 over Back Swamp
Good Condition38 years old125 vehicles/day
Location
| State | South Carolina |
| County | Lee |
| Location | 3 Mi E Lynchburg |
| Carries | S-31-99 |
| Crosses | Back Swamp |
| Coordinates | 34.04583, -80.01478 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 89.9 ft (27.4 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 37.4 ft (11.4 m) |
| Deck Area | 312.4 sq m |
| Main Spans | 3 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 125 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000008184 |