Ia 471 over Branch Boyer River
Good Condition42 years old1,070 vehicles/day
Location
| State | Iowa |
| County | Sac |
| Location | 0.7 Mi. N Of Jct. Ia 175 |
| Carries | Ia 471 |
| Crosses | Branch Boyer River |
| Coordinates | 42.32234, -95.14832 |
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 | 24.9 ft (7.6 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 83.6 sq m |
| Main Spans | 2 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 1,070 (2022) |
| Truck Traffic | 26% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000046671 |