NAL, but I think part of it is that Google does update its map regularly (you see the latest edition whenever you access it online)

Where Google arguably failed was, despite having a system to report discrepancies which people used for this collapsed bridge, Google failed to make the routing changes that could be reasonably expected by 5+ years. They could have used some combination of satellite images, user reports, the Google car etc.

Even if you were to compare it to paper media: If you published a new edition twice a year, you had incorrect information, people reported it to you yet you still failed to correct it for 10+ editions and it causes harm to someone, then as a publisher you may be liable.