S-21-145 over Lake Swamp
Good Condition30 years old700 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 3mi NE Timmonsville |
| Carries | S-21-145 |
| Crosses | Lake Swamp |
| Coordinates | 34.15900, -79.93639 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 120.1 ft (36.6 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 391.6 sq m |
| Main Spans | 4 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 700 (2023) |
| Truck Traffic | 1% |
| 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 | 000000000009005 |