I need to get some more gravel on the inner part of the drive. I also need to put some clay on the spots where erosion has begun on the road bank. Also, some big rock (like riprap) to define a curb: my neighbor's son dragged several deer out of the woods this fall with his ATV, but didn't want to drag them through the gravel -- so he drove along the edge of the bank. Eventually, that'll destroy the road. Some heavy rock along there will help prevent that.
I co-own the road with my neighbor, and we're supposed to take care of it together, but I've been putting money into it independently. For him, it's just recreational access to the woods; for me, it's the only way I have to get to my eventual retirement homesite.
I do think I'll have to talk with my neighbor over his son's ATV usage. He needs to stay on the road. Otherwise, we'll both be spending thousands of dollars some day not so far off to rebuild the road.