[ithos]

Found this:

Engineers blame $3m structural 'flaw' for Baltimore's Francis Scott Key bridge collapsing - and tens of thousands of bridges across US could also have fault | Daily Mail Online

The Francis Scott Key Bridge was a continuous truss bridge, which can fail if it loses one support pillar. Multiple high-profile failures of such bridges have occurred, and thousands remain across waterways throughout the US.

A slightly larger budget would have allowed for more protection that may have significantly limited the damage.