Il 31 & 120 over Boone Creek
Good Condition36 years old30,300 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 1.6m W Of Chapel Hil |
| Carries | Il 31 & 120 |
| Crosses | Boone Creek |
| Coordinates | 42.34572, -88.26888 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 94.8 ft (28.9 m) |
| Max Span | 92.5 ft (28.2 m) |
| Deck Width | 86.9 ft (26.5 m) |
| Deck Area | 765.9 sq m |
| Main Spans | 1 |
| Year Built | 1990 (reconstructed 2014) |
Traffic
| Avg Daily Traffic | 30,300 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056006000000000 |