Y21 Sundown RD over US 20 US 52
Good Condition39 years old6,285 vehicles/day
Location
| State | Iowa |
| County | Dubuque |
| Location | At Jct Sr- Y21 |
| Carries | Y21 Sundown RD |
| Crosses | US 20 US 52 |
| Coordinates | 42.44056, -90.85036 |
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 | 256.9 ft (78.3 m) |
| Max Span | 82.0 ft (25 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 1033.6 sq m |
| Main Spans | 4 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 6,285 (2022) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
| 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 | 000000000605745 |