Pretty much any navigation software vendor has a disclaimer of warranty. I don’t know if that will be a successful defense against an allegation of negligence. The lawsuit claims that a local resident suggested an edit to Google Maps to remove the bridge on two different occasions before the accident, but it got stuck in review or didn’t get accepted, and that other locals also attempted unsuccessfully to get the data corrected.
According to the suit, the victim had been following a route recommended by the application. In other words, they weren’t eyeballing it, as some have implied here.
Apparently the bridge and road were on private property – the suit also names the owners as co-defendants. The state highway department says they didn’t have the authority to erect barriers on the owners’ behalf.