Structure 9957 · Beaufort County, SC
Carries US 21 NB over Beaufort River, Southeast Of Beaufort.
4,211 ft end to end, longest span 170 ft: about 12 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | South Carolina |
| County | Beaufort |
| Location | Southeast Of Beaufort |
| Carries | US 21 NB |
| Crosses | Beaufort River |
| Coordinates | 32.39377, -80.67541 |
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 4211.0 ft (1283.5 m) |
| Max Span | 169.9 ft (51.8 m) |
| Deck Width | 46.6 ft (14.2 m) |
| Deck Area | 18225.7 sq m |
| Main Spans | 23 |
| Year Built | 2012 |
| Avg Daily Traffic | 14,400 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000009957 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.