Structure 4076 · Marion County, MO
Carries Is 72 E over Mississippi Rvr Cst 410, S 21 T 57 N R 4 W.
4,490 ft end to end: 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 through truss.
| State | Missouri |
| County | Marion |
| Location | S 21 T 57 N R 4 W |
| Carries | Is 72 E |
| Crosses | Mississippi Rvr Cst 410 |
| Coordinates | 39.71917, -91.36130 |
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 4490.2 ft (1368.6 m) |
| Max Span | 640.1 ft (195.1 m) |
| Deck Width | 85.6 ft (26.1 m) |
| Deck Area | 35720.5 sq m |
| Main Spans | 1 |
| Year Built | 2000 |
| Avg Daily Traffic | 17,638 (2024) |
| Truck Traffic | 33% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 4076 |
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.