WB US 20 over Boone River/rec Trail
Fair Condition52 years old5,050 vehicles/day
Location
| State | Iowa |
| County | Hamilton |
| Location | 1.2 Mi E Of E Jct Ia 17 |
| Carries | WB US 20 |
| Crosses | Boone River/rec Trail |
| Coordinates | 42.44924, -93.79053 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 325.1 ft (99.1 m) |
| Max Span | 125.0 ft (38.1 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 1308.1 sq m |
| Main Spans | 3 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 5,050 (2022) |
| Truck Traffic | 26% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000603345 |