Ramp On I-77 SB over US 21
Good Condition22 years old4,400 vehicles/day
Location
| State | South Carolina |
| County | York |
| Location | 4 Miles NE Of Rock Hill |
| Carries | Ramp On I-77 SB |
| Crosses | US 21 |
| Coordinates | 34.97302, -80.98742 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 232.9 ft (71 m) |
| Max Span | 137.8 ft (42 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 667.4 sq m |
| Main Spans | 3 |
| Year Built | 2004 |
Traffic
| Avg Daily Traffic | 4,400 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 7 |
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 | 000000000009858 |