US 20 over Drainage Ditch #4
Good Condition40 years old9,500 vehicles/day
Location
| State | Iowa |
| County | Webster |
| Location | At Jct. SR P73 |
| Carries | US 20 |
| Crosses | Drainage Ditch #4 |
| Coordinates | 42.44898, -94.01034 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 14.1 ft (4.3 m) |
| Deck Area | 222.0 sq m |
| Main Spans | 2 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 9,500 (2022) |
| Truck Traffic | 26% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000605760 |