US 6 (159th St) over Cal Union Ditch
Fair Condition73 years old30,700 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.9 M E Il 1 |
| Carries | US 6 (159th St) |
| Crosses | Cal Union Ditch |
| Coordinates | 41.60090, -87.61838 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 27.9 ft (8.5 m) |
| Deck Width | 69.9 ft (21.3 m) |
| Deck Area | 193.8 sq m |
| Main Spans | 1 |
| Year Built | 1953 |
Traffic
| Avg Daily Traffic | 30,700 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016038600000000 |