US 12 20 45 NB over S&s & Im Cnls&icg Rr
Fair Condition50 years old77,700 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.9 M S I-55 |
| Carries | US 12 20 45 NB |
| Crosses | S&s & Im Cnls&icg Rr |
| Coordinates | 41.74782, -87.85573 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1344.2 ft (409.7 m) |
| Max Span | 180.1 ft (54.9 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 5244.2 sq m |
| Main Spans | 13 |
| Year Built | 1976 (reconstructed 2022) |
Traffic
| Avg Daily Traffic | 77,700 (2019) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016246800000000 |