part of my new job is maintaining about 3/4 miles of dirt road - about 1/2 of which on on a moderately steep grade. parts of the road seem to have a fairly good base of probably 1" and under crusher run and fines, other parts seem to be more of the original soil. in my arsenol i have a frontloader with a probably 5-6 ft. blade, which is what ive been using to scrape out the potholes going forwards and respread the mix by dragging in reverse. i can get pretty good results in the short term but the potholes seem to quickly reform once the rains start. ive read this (click here) article
about grading which seems pretty informative, and recommends maintaining a crown in the middle of the road to shed water.
my main question is - without a grader, is there a way to use the frontloader (with flat blade) to maintain the crown? and also, how important is compaction - i dont have a roller, so the cars do most of the compaction after i scrape it out, which tends to leave dips, but is not too bad.
lastly, how often should i expect to have to regrade? is every few weeks way too much, or is that pretty regular?
and actually one more - if im adding a new layer of gravel, can i use a finer mix - say 5/8 with fines - over top of the coarser mix. it seems like the larger stones (3/4 and over) cause ruts, and i'd like to cover those with a finer mix to make a smoother surface.
opinions are welcome, but practical advice would be most appreciated. unfortunately im not set up at the moment to post pics, but i will soon if i can... thanks for any help!!