County Line RD over Kishwaukee Overflow
Poor Condition48 years old475 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 0.5 M N Ofus 20 |
| Carries | County Line RD |
| Crosses | Kishwaukee Overflow |
| Coordinates | 42.25741, -88.70550 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 3 (Serious) |
| Superstructure | 3 (Serious) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 97.1 ft (29.6 m) |
| Max Span | 45.9 ft (14 m) |
| Deck Width | 27.2 ft (8.3 m) |
| Deck Area | 245.7 sq m |
| Main Spans | 2 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 475 (2017) |
| Truck Traffic | 10% |
| 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 | 056312000000000 |