I- 55 SB over Des Plaines River
Fair Condition69 years old31,250 vehicles/day
Location
| State | Illinois |
| County | Will |
| Location | 2.3 M S Of US 6 |
| Carries | I- 55 SB |
| Crosses | Des Plaines River |
| Coordinates | 41.41981, -88.19435 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Truss - Thru |
| Total Length | 1405.8 ft (428.5 m) |
| Max Span | 485.9 ft (148.1 m) |
| Deck Width | 35.8 ft (10.9 m) |
| Deck Area | 4670.6 sq m |
| Main Spans | 3 |
| Year Built | 1957 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 31,250 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 099000800000000 |