Ia 21 over US 20
Fair Condition43 years old7,700 vehicles/day
Location
| State | Iowa |
| County | Black Hawk |
| Location | At Jct. US 20 |
| Carries | Ia 21 |
| Crosses | US 20 |
| Coordinates | 42.45277, -92.34677 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 267.1 ft (81.4 m) |
| Max Span | 91.9 ft (28 m) |
| Deck Width | 87.3 ft (26.6 m) |
| Deck Area | 2165.2 sq m |
| Main Spans | 4 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 7,700 (2022) |
| Truck Traffic | 4% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000605220 |