EB US 20 over N Fork Maquoketa River
Fair Condition40 years old5,400 vehicles/day
Location
| State | Iowa |
| County | Dubuque |
| Location | 0.6 Mi. W Of Jct Ia 136 |
| Carries | EB US 20 |
| Crosses | N Fork Maquoketa River |
| Coordinates | 42.47053, -91.12566 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 503.0 ft (153.3 m) |
| Max Span | 108.9 ft (33.2 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 2023.6 sq m |
| Main Spans | 5 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 5,400 (2022) |
| Truck Traffic | 19% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000605830 |