It’s true you can’t design for every single eventuality in engineering, but you also aren’t just designing for best case scenario in any civil infrastructure.
So even this idiot truck in the picture can slam his over height trailer and still the overpass didn’t collapse because there is an expectation it will happen at some point.
After 9/11, every new nuclear reactor containment in the west was being designed for 747 crash (even though it was only 767 in 9/11). Is this overkill? Probably, but suddenly it’s not some wild Tom Clancy scenario any more.
Civil infrastructure engineering is a whole system, not just the structure itself. We can reasonably assume there will be overloaded trucks using it, so are they doing regular X-Ray scanning to detect structural fatigue issues? If not, then this is still a systematic flaw that would need to be addressed.
