Il 171 & 79 ST EB over US 12 20 45 Mannheim
Poor Condition67 years old17,300 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.1 M SW US 45 |
| Carries | Il 171 & 79 ST EB |
| Crosses | US 12 20 45 Mannheim |
| Coordinates | 41.74546, -87.85270 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 179.8 ft (54.8 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 608.3 sq m |
| Main Spans | 3 |
| Year Built | 1959 (reconstructed 1998) |
Traffic
| Avg Daily Traffic | 17,300 (2022) |
| Truck Traffic | 22% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016051800000000 |