Twelth ST over I-495 RD 60
Fair Condition49 years old5,790 vehicles/day
Location
| State | Delaware |
| County | New Castle |
| Location | Wilmington |
| Carries | Twelth ST |
| Crosses | I-495 RD 60 |
| Coordinates | 39.73566, -75.52155 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 190.6 ft (58.1 m) |
| Max Span | 91.9 ft (28 m) |
| Deck Width | 80.1 ft (24.4 m) |
| Deck Area | 1417.6 sq m |
| Main Spans | 2 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 5,790 (2022) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 6 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 1815 009 |