I've mentioned before that Dutch roads and cycle-paths don't often suffer from potholes. There's currently a patch of slightly rough surface between our home and the local shops, but that's as bad as it gets. I can't think of any actual potholes on any roads or cycle-paths that we use.
The reason, of course, is that standards of maintenance are very good.
A one metre wide part dug out to the depth of 4 cm over the
crack, two metres square over the depression. After digging,
this was sealed before filling.
A good example of this happened this week on a residential street near where we live. It's not a through route by car, but it is by bike and I ride there quite frequently as it's on the route to the post office. This street had a crack all the way across its surface which recently became noticeable by bike. There was also a growing depression which started to form a puddle. None of this was unpleasant to cycle over, and it was certainly not something you'd swerve to miss. In any case, there are almost never cars on this street, so the situation was never dangerous. However, if this had been left as we go into winter then ice would have formed in it and made the problem worse. Therefore it was fixed as you can see in this video:
Afterwards
Potholes are hazardous for all road users, but they are particularly dangerous for cyclists because of their potential to cause a crash should you ride through them and the need to swerve to avoid them.
It is better if problems with potholes are avoided by fixing the potholes than by expecting people to cycle around them, especially on busy roads.