Brad good question.
What kind of rock are you putting down? 57 stone? #4 Stone etc?
a What condition is the road at the current moment? Is is an old dirt road? Clay base? How well compacted already from years of driving? What are you going to be driving on it? Tractor or Cadillac? How well is the road setup with a proper crown and ditches?
For my main rural roads on the timber properties I put down a heavy base of #4 stones to start at 2-4 inches. After about a year I then come back with 57 stone as a top layer. After 6 months I put aggregate layer or many call crusher run. Now you have a road.
If you do not have a good solid clay base to start that has been driven on a while then it would be good to put down geotextile layer first that will prevent the stone from all disappearing into the soft soil.
Get back with more details and we can figure out the best road for your purposes.
