US 278 EB over Mackay Creek
Poor Condition70 years old28,950 vehicles/day
Location
| State | South Carolina |
| County | Beaufort |
| Location | @ Hilton Head Island |
| Carries | US 278 EB |
| Crosses | Mackay Creek |
| Coordinates | 32.23051, -80.79184 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 2230.3 ft (679.8 m) |
| Max Span | 70.2 ft (21.4 m) |
| Deck Width | 39.4 ft (12 m) |
| Deck Area | 8157.6 sq m |
| Main Spans | 1 |
| Year Built | 1956 (reconstructed 1984) |
Traffic
| Avg Daily Traffic | 28,950 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002297 |