If you look on the DEEP website you can find the maps for hunting areas. They are copies of USGS topo maps. They are not the highest quality but you can see the roads on some of them.

When you get into a state forest a maintained road would be one that the state grades, removes downed trees blocking it, etc. There are a lot of homemade roads from 4X4s and log skidders that are not forest roadways. Some of the state forest roads are paved, so obviously those are maintained.