US 321 over I-20
Fair Condition61 years old9,000 vehicles/day
Location
| State | South Carolina |
| County | Richland |
| Location | 5mi N Of Columbia |
| Carries | US 321 |
| Crosses | I-20 |
| Coordinates | 34.06639, -81.02250 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 265.1 ft (80.8 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 66.6 ft (20.3 m) |
| Deck Area | 1640.2 sq m |
| Main Spans | 4 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 9,000 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 8 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000004653 |