Algonquin Road over Crystal Creek
Fair Condition22 years old31,600 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 02m W Of Pyott |
| Carries | Algonquin Road |
| Crosses | Crystal Creek |
| Coordinates | 42.17603, -88.30775 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 60.4 ft (18.4 m) |
| Max Span | 55.8 ft (17 m) |
| Deck Width | 65.0 ft (19.8 m) |
| Deck Area | 364.3 sq m |
| Main Spans | 1 |
| Year Built | 2004 |
Traffic
| Avg Daily Traffic | 31,600 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056316500000000 |