US 21 SB over Whale Branch
Fair Condition58 years old8,900 vehicles/day
Location
| State | South Carolina |
| County | Beaufort |
| Location | 8.7 Mi NW Of Beaufort |
| Carries | US 21 SB |
| Crosses | Whale Branch |
| Coordinates | 32.54102, -80.74546 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 950.1 ft (289.6 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 36.7 ft (11.2 m) |
| Deck Area | 3243.5 sq m |
| Main Spans | 4 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 8,900 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000005219 |