31st ST over I- 90 94 Ryan & Cta
Fair Condition65 years old7,550 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.9 M S I-55 |
| Carries | 31st ST |
| Crosses | I- 90 94 Ryan & Cta |
| Coordinates | 41.83824, -87.63151 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 397.3 ft (121.1 m) |
| Max Span | 75.8 ft (23.1 m) |
| Deck Width | 87.9 ft (26.8 m) |
| Deck Area | 3245.5 sq m |
| Main Spans | 7 |
| Year Built | 1961 (reconstructed 2001) |
Traffic
| Avg Daily Traffic | 7,550 (2022) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 16 |
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 | 016115900000000 |