FM over Rock River
Fair Condition46 years old180 vehicles/day
Location
| State | Iowa |
| County | Lyon |
| Location | 100452003 |
| Carries | FM |
| Crosses | Rock River |
| Coordinates | 43.46228, -96.17689 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 273.0 ft (83.2 m) |
| Max Span | 68.9 ft (21 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 815.4 sq m |
| Main Spans | 4 |
| Year Built | 1980 |
Traffic
| Avg Daily Traffic | 180 (2022) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000231091 |