We have such roads here in NY called parkways, cars only no busses or trucks. Absolute disasters. I frequently take the Belt parkway in NYC to long island via the southern state parkway. That thing looks like it was carpet bombed. They have been patching massive delaminations and joint failures on a weekly basis all winter and we have barely had any freezing weather or snow (it's been spring all winter.) One delam by an interchange was so deep that it took out a few car tires with low side walls.

I was annoyed at these failures and some light reading. You can make more robust roads by making them thicker with a sturdy foundation. Of course this comes at a much higher cost. For example, the autobahn pavement thickness is 27 inches. Whereas by me they mill a few inches off the top of whatever sad situation in below and top it with another 4 inches or so. This is because robust roads are costly and there are so many other things in a muni budget which need attention. So they compromise and lay down a cheap road.