US 20 over Miss. River HWY & Rr
Fair Condition83 years old17,700 vehicles/day
Location
| State | Iowa |
| County | Dubuque |
| Location | In Dubuque |
| Carries | US 20 |
| Crosses | Miss. River HWY & Rr |
| Coordinates | 42.49178, -90.66253 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel Continuous |
| Design | Arch - Thru |
| Total Length | 5759.8 ft (1755.6 m) |
| Max Span | 845.1 ft (257.6 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 16327.1 sq m |
| Main Spans | 3 |
| Year Built | 1943 (reconstructed 1992) |
Traffic
| Avg Daily Traffic | 17,700 (2022) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 14 |
Inspection & Ownership
| Last Inspection | October 2021 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 000000000023880 |