Structure 1909 · Buchanan County, MO
Carries Is 229 S over Cst Mcarthur DR Cst Mon, S 17 T 57 N R 35 W.
Set by its lowest-rated component: Superstructure and Substructure at 4 of 9.
How ratings work6,659 ft end to end, longest span 117 ft: about 18 football fields, or 1.3 miles. 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 multi-beam bridge.
| State | Missouri |
| County | Buchanan |
| Location | S 17 T 57 N R 35 W |
| Carries | Is 229 S |
| Crosses | Cst Mcarthur DR Cst Mon |
| Coordinates | 39.76030, -94.85758 |
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 6659.1 ft (2029.7 m) |
| Max Span | 116.8 ft (35.6 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 19891.1 sq m |
| Main Spans | 54 |
| Year Built | 1976 |
| Avg Daily Traffic | 10,163 (2024) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 6 |
| Last Inspection | September 2024 |
| 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 | 1909 |
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.