Structure 3493 · Marion County, MO
Carries US 24 W over Mississippi Rvr, S 2 T 59 N R 5 W.
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 | Missouri |
| County | Marion |
| Location | S 2 T 59 N R 5 W |
| Carries | US 24 W |
| Crosses | Mississippi Rvr |
| Coordinates | 39.93157, -91.42583 |
| Material | Steel Continuous |
| Design | Stayed Girder |
| Total Length | 4507.9 ft (1,374 m) |
| Max Span | 899.9 ft (274.3 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 14701.8 sq m |
| Main Spans | 5 |
| Year Built | 1985 |
| Avg Daily Traffic | 10,271 (2024) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 3493 |
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.