I use Google street view to identify roads that are likely too busy / fast for me tastes. I am looking for less used and therefore often less maintained roads, so it is kind of the opposite of what you want. The issue I run into is that the roads I am seeking are the ones less likely to have street view available. In your case it should work in your favor, and the more maintained roads are better covered by street view.

Of course, since going with 35-38mm tires on my rod bike, crappy roads are no problem.