Structure 16262900000000 · Cook County, IL
Carries I355 NB & SB over Desplaines River Val, .5m S Of Bluff RD.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work6,593 ft end to end, longest span 271 ft: about 18 football fields, or 1.2 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | Illinois |
| County | Cook |
| Location | .5m S Of Bluff RD |
| Carries | I355 NB & SB |
| Crosses | Desplaines River Val |
| Coordinates | 41.68008, -88.03095 |
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 6592.8 ft (2009.5 m) |
| Max Span | 270.7 ft (82.5 m) |
| Deck Width | 63.6 ft (19.4 m) |
| Deck Area | 38984.3 sq m |
| Main Spans | 35 |
| Year Built | 2007 |
| Avg Daily Traffic | 83,900 (2023) |
| Truck Traffic | 16% |
| Lanes On Bridge | 6 |
| Last Inspection | June 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 016262900000000 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.