Il 83 171 (kinger over Cal Sag Channel
Fair Condition92 years old20,500 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | .1mi S Of 171 N Jct |
| Carries | Il 83 171 (kinger |
| Crosses | Cal Sag Channel |
| Coordinates | 41.69643, -87.93640 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 507.9 ft (154.8 m) |
| Max Span | 304.5 ft (92.8 m) |
| Deck Width | 55.4 ft (16.9 m) |
| Deck Area | 2616.1 sq m |
| Main Spans | 1 |
| Year Built | 1934 (reconstructed 1997) |
Traffic
| Avg Daily Traffic | 20,500 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016042700000000 |