Ill 75 over Rock River
Fair Condition99 years old7,200 vehicles/day
Location
| State | Illinois |
| County | Winnebago |
| Location | In Rockton |
| Carries | Ill 75 |
| Crosses | Rock River |
| Coordinates | 42.44928, -89.07248 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 568.2 ft (173.2 m) |
| Max Span | 70.9 ft (21.6 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 2061.1 sq m |
| Main Spans | 8 |
| Year Built | 1927 (reconstructed 1974) |
Traffic
| Avg Daily Traffic | 7,200 (2023) |
| Truck Traffic | 8% |
| 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 | 101010900000000 |