As usual, no one thinks about bridges until something happens---and then they are amazed that things can happen, and object to a world in which things are happening...and that anything happening is ipso facto evidence of evil-doing.

I've lived in a region that has plenty of bridges. Ships running into them and putting them out of commission until replacement or repair. Or natural events (storms) causing significant damage to be repaired. Or major improvements implemented to accommodate traffic growth. The Tacoma Narrows Bridge was dramatically destroyed by winds in its first incarnation ("Galloping Gertie"), before it was even completed. So, for us, who pay attention to bridges, concern and caution are the order of the day.

Elevated highway causeways are another concern, and earthquakes have caused a lot of damage thereby. We fix and repair...and forget.