Il 31 over Nippersink Creek
Fair Condition99 years old7,600 vehicles/day
Location
| State | Illinois |
| County | McHenry |
| Location | 1.5 M S Of US 12 |
| Carries | Il 31 |
| Crosses | Nippersink Creek |
| Coordinates | 42.42871, -88.30192 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 167.0 ft (50.9 m) |
| Max Span | 56.1 ft (17.1 m) |
| Deck Width | 47.9 ft (14.6 m) |
| Deck Area | 743.1 sq m |
| Main Spans | 3 |
| Year Built | 1927 (reconstructed 1988) |
Traffic
| Avg Daily Traffic | 7,600 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 056003700000000 |