L20 Loess Hills over Willow Creek
Good Condition33 years old1,414 vehicles/day
Location
| State | Iowa |
| County | Harrison |
| Location | 079433016 |
| Carries | L20 Loess Hills |
| Crosses | Willow Creek |
| Coordinates | 41.62412, -95.89576 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 405.8 ft (123.7 m) |
| Max Span | 155.8 ft (47.5 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 1472.0 sq m |
| Main Spans | 3 |
| Year Built | 1993 |
Traffic
| Avg Daily Traffic | 1,414 (2022) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000027841 |