Il 21 (milwaukee) over Des Plaines River
Good Condition17 years old20,400 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.3 M SE US 45 |
| Carries | Il 21 (milwaukee) |
| Crosses | Des Plaines River |
| Coordinates | 42.10152, -87.88406 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 162.4 ft (49.5 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 85.0 ft (25.9 m) |
| Deck Area | 1282.0 sq m |
| Main Spans | 3 |
| Year Built | 2009 |
Traffic
| Avg Daily Traffic | 20,400 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016656600000000 |