Thorne RD over Kishwaukee Riv
Poor Condition34 years old275 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 3.0 Mi W Of Marengo |
| Carries | Thorne RD |
| Crosses | Kishwaukee Riv |
| Coordinates | 42.26611, -88.66470 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 4 (Poor) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 216.2 ft (65.9 m) |
| Max Span | 54.1 ft (16.5 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 560.1 sq m |
| Main Spans | 4 |
| Year Built | 1992 |
Traffic
| Avg Daily Traffic | 275 (2021) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056315100000000 |