US 12 20 45 Mannhe over Rr - Up Proviso Yd
Fair Condition72 years old43,600 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.3 M S US 20 |
| Carries | US 12 20 45 Mannhe |
| Crosses | Rr - Up Proviso Yd |
| Coordinates | 41.89509, -87.88361 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1408.1 ft (429.2 m) |
| Max Span | 120.1 ft (36.6 m) |
| Deck Width | 71.9 ft (21.9 m) |
| Deck Area | 9399.5 sq m |
| Main Spans | 18 |
| Year Built | 1954 (reconstructed 1998) |
Traffic
| Avg Daily Traffic | 43,600 (2023) |
| Truck Traffic | 12% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016033700000000 |