Il 31 over Algonquin RD
Good Condition13 years old25,600 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 2.1 M E Randall RD |
| Carries | Il 31 |
| Crosses | Algonquin RD |
| Coordinates | 42.16989, -88.29630 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 154.5 ft (47.1 m) |
| Max Span | 147.0 ft (44.8 m) |
| Deck Width | 78.4 ft (23.9 m) |
| Deck Area | 1125.7 sq m |
| Main Spans | 1 |
| Year Built | 2013 |
Traffic
| Avg Daily Traffic | 25,600 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056008100000000 |