US 20 over Drainage
Fair Condition46 years old10,200 vehicles/day
Location
| State | Iowa |
| County | Black Hawk |
| Location | 1.9 Mi. E Of E Jct. I-380 |
| Carries | US 20 |
| Crosses | Drainage |
| Coordinates | 42.44993, -92.15496 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 202.9 sq m |
| Main Spans | 3 |
| Year Built | 1980 |
Traffic
| Avg Daily Traffic | 10,200 (2022) |
| Truck Traffic | 21% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 18 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000604955 |