Structure 1006800000000 · Adams County, IL
Carries US 24(wb)/ Broadwa over Miss. R/streets/bnrr, W Edge Dwntwn Quincy.
4,508 ft end to end, longest span 900 ft: about 13 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 cable-stayed bridge.
| State | Illinois |
| County | Adams |
| Location | W Edge Dwntwn Quincy |
| Carries | US 24(wb)/ Broadwa |
| Crosses | Miss. R/streets/bnrr |
| Coordinates | 39.93582, -91.41203 |
| Material | Steel Continuous |
| Design | Stayed Girder |
| Total Length | 4508.2 ft (1374.1 m) |
| Max Span | 899.9 ft (274.3 m) |
| Deck Width | 46.6 ft (14.2 m) |
| Deck Area | 19512.2 sq m |
| Main Spans | 3 |
| Year Built | 1986 |
| Avg Daily Traffic | 8,600 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 001006800000000 |
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.