The structure apparently was inspected several years ago and declared sound. I suppose one can always say "more thorough inspections!" but it looks like this was a surprise and would have happened on any reasonable budget.
You can design and inspect things like they were aircraft, but then everything you do is a large multiple more expensive. It’s hard to think of a one of a kind instrument that is an enormous outdoor installation failing after 57 years in operation is an outcome that deserves any blame.
