Il 176 over Island Lake Overflow
Fair Condition97 years old19,200 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | Island Lake |
| Carries | Il 176 |
| Crosses | Island Lake Overflow |
| Coordinates | 42.27538, -88.20253 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 55.4 ft (16.9 m) |
| Deck Area | 133.5 sq m |
| Main Spans | 1 |
| Year Built | 1929 |
Traffic
| Avg Daily Traffic | 19,200 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056003400000000 |