FM 3170 Valley over Winnebago River
Fair Condition52 years old190 vehicles/day
Location
| State | Iowa |
| County | Hancock |
| Location | 097231606 |
| Carries | FM 3170 Valley |
| Crosses | Winnebago River |
| Coordinates | 43.22321, -93.56405 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 153.9 ft (46.9 m) |
| Max Span | 57.1 ft (17.4 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 459.6 sq m |
| Main Spans | 3 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 190 (2022) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 321 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000174081 |