I suspect I could be any civil engineer, assuming that I didn't remember the wrong order of magnitude. Decisions have to be made about how safe to make things. It is quite difficult to do that without putting a dollar figure on human life, and AFAIK it is order of magnitude 10 million.
Otherwise when do you stop bubble wrapping infrastructure?
The numbers are close enough that they probably were skimping, but we can't tell that from the outcome of 8 people dying.