Structure 3497 · St. Charles County, MO
Carries US 67 S over Mississippi Rvr Bnsf Rr, S 25 T 48 N R 7 E.
4,620 ft end to end, longest span 756 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 | St. Charles |
| Location | S 25 T 48 N R 7 E |
| Carries | US 67 S |
| Crosses | Mississippi Rvr Bnsf Rr |
| Coordinates | 38.88081, -90.18148 |
| Material | Steel Continuous |
| Design | Stayed Girder |
| Total Length | 4620.1 ft (1408.2 m) |
| Max Span | 755.9 ft (230.4 m) |
| Deck Width | 86.3 ft (26.3 m) |
| Deck Area | 37035.7 sq m |
| Main Spans | 3 |
| Year Built | 1994 |
| Avg Daily Traffic | 26,860 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
| Last Inspection | June 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 | 3497 |
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.