SB Ia 58 over US 20
Good Condition42 years old155 vehicles/day
Location
| State | Iowa |
| County | Black Hawk |
| Location | At Jct. U.s. 20 |
| Carries | SB Ia 58 |
| Crosses | US 20 |
| Coordinates | 42.46527, -92.46570 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 272.0 ft (82.9 m) |
| Max Span | 97.1 ft (29.6 m) |
| Deck Width | 49.2 ft (15 m) |
| Deck Area | 1243.5 sq m |
| Main Spans | 4 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 155 (2022) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
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 | 000000000605630 |