NY has a novel way of doing this process: if you don’t fix potholes, the road eventually self converts back to unpaved without any cost outlay for the conversion itself.
Yes, it’s cheaper to go to dirt roads so in the spring we can dump about 200 tons of gravel on them for every mile when they turn to soup. LOL
I remember as a kid, every few years they tarred and graveled over a base of asphalt. It was fast and filled a lot of cracks and imperfections before they got too bad.
Some towns even ran a sweeper over the roads after and collected the excess gravel and reused it.
Now they pave once and then let them fall apart.