Thorne RD over Kiswaukee River
Fair Condition67 years old275 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 1.0 Mi N. Of Us-20 |
| Carries | Thorne RD |
| Crosses | Kiswaukee River |
| Coordinates | 42.26497, -88.66465 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 5 (Fair) |
| Culvert | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 28.9 ft (8.8 m) |
| Max Span | 5.9 ft (1.8 m) |
| Deck Width | 20.0 ft (6.1 m) |
| Deck Area | 53.7 sq m |
| Main Spans | 4 |
| Year Built | 1959 |
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 | 056500700000000 |