US 278 WB over Mackay Creek
Fair Condition43 years old28,950 vehicles/day
Location
| State | South Carolina |
| County | Beaufort |
| Location | Hilton Head Island |
| Carries | US 278 WB |
| Crosses | Mackay Creek |
| Coordinates | 32.23068, -80.79177 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 2230.6 ft (679.9 m) |
| Max Span | 70.9 ft (21.6 m) |
| Deck Width | 39.4 ft (12 m) |
| Deck Area | 8158.8 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 28,950 (2023) |
| Truck Traffic | 4% |
| 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 | 000000000007650 |