Ia 471 over Boyer River
Fair Condition42 years old1,070 vehicles/day
Location
| State | Iowa |
| County | Sac |
| Location | 3.5 Mi. N Of Jct Ia 175 |
| Carries | Ia 471 |
| Crosses | Boyer River |
| Coordinates | 42.36345, -95.14833 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 190.9 ft (58.2 m) |
| Max Span | 53.1 ft (16.2 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 768.2 sq m |
| Main Spans | 4 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 1,070 (2022) |
| Truck Traffic | 26% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000046681 |