Tell me about it. In 2007, there has been a bridge collapse[0] that was mostly caused by inadequate maintenance. Two others (more recently) were accidents[1][2]. And these weren't some little bridges in the middle of nowhere. They were heavily used interstates (sometimes crossing rivers). You can't miss them.

I live in a city that has three major rivers in it, and more bridges than any other[3]. Things like these give me the willies.

[0] https://en.wikipedia.org/wiki/I-35W_Mississippi_River_bridge...

[1] https://en.wikipedia.org/wiki/I-5_Skagit_River_Bridge_collap...

[2] https://en.wikipedia.org/wiki/Interstate_85_bridge_collapse

[3] https://en.wikipedia.org/wiki/Pittsburgh#Transportation