Ill 54 over I 57
Poor Condition59 years old1,150 vehicles/day
Location
| State | Illinois |
| County | Iroquois |
| Location | Onarga Interchange |
| Carries | Ill 54 |
| Crosses | I 57 |
| Coordinates | 40.71478, -88.02845 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 222.1 ft (67.7 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 57.7 ft (17.6 m) |
| Deck Area | 1191.5 sq m |
| Main Spans | 4 |
| Year Built | 1967 |
Traffic
| Avg Daily Traffic | 1,150 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 038004800000000 |