Structure 82014400000000 · St. Clair County, IL
Carries I-55/64 EB Cd "d" over Uprr O2 8th9th10th Piggo, Pier D1 To Abut D46.
Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.
How ratings work4,444 ft end to end, longest span 137 ft: about 12 football fields. 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 girder bridge.
| State | Illinois |
| County | St. Clair |
| Location | Pier D1 To Abut D46 |
| Carries | I-55/64 EB Cd "d" |
| Crosses | Uprr O2 8th9th10th Piggo |
| Coordinates | 38.61680, -90.17846 |
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 4443.9 ft (1354.5 m) |
| Max Span | 137.1 ft (41.8 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 14899.5 sq m |
| Main Spans | 46 |
| Year Built | 1969 (reconstructed 2021) |
| Avg Daily Traffic | 24,300 (2024) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
| Last Inspection | February 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Not applicable |
| Structure Number | 082014400000000 |
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.