S-21-721 over Grey Swamp #1
Good Condition29 years old125 vehicles/day
Location
| State | South Carolina |
| County | Florence |
| Location | 3 Mi N Coward |
| Carries | S-21-721 |
| Crosses | Grey Swamp #1 |
| Coordinates | 34.00778, -79.73250 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 33.1 ft (10.1 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 112.1 sq m |
| Main Spans | 1 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 125 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000009172 |