My situation is a bit different.
I have 1/2 mile of old gravel road to my acual concrete driveway. I have about .3 miles of it actually on my property with a loop at the house.
The original road was for logging. 25 or 30 years ago people started buying and sectioning it off and selling it. In about 1989 or 90 they upgraded the old logging road to a gravel road. Rumor is there were 39 dump trucks of material...
When I bought this place in August 2010, the driveway was in disrepair, the easment has 2 other properties on it an it relatively maintained. I had logging done in Nov 2010 and they trashed the gravel an dumped 50 tons of what is called "57" locally, or 1/2" to 3/4" rock. It looked good for a couple months but just rolled around like marbles in some spots. Made riding my Harley almost impossible on the property. I regroomed it with a 4' little york rake and my riding mower and that helped a little. Finally I got ~75 tons what is locally caled "recycled concrete" it has no metal, and ranges from 1.5" to dust.
It was VERY difficult to tailgate, it was clumpy and heavy. I ended up with some spots that were/are way too thick, etc. I planned for extra for a couple of parking spots, but did not get it. By then I did have the tractor, an I used the bucket and back dragging to groom and fix mucc of the clumpy problems, but not all. then winter hit. That was last fall.
I've not groomed the loop (it is on a steep slope and that is where MOST of the excess got dropped) at all. I have groomed the top to the gate, and the easment (which I did not add the recycled concrete to) a couple times with my 72" ratchet rake (it ROCKS, takes 15 minutes to do .25 miles or more). What it did was pack down SOLID. I can ride my Harley (slowly) up and down the hill. It tends to not wash out, there is minimal vegetation, and it is packed solid.
Is it pretty? NO.
Is it functional? VERY
My biggest complaint is during the seriously wet, or seriously dry season, it either splashes or dusts EVERYTHING with concrete dust, which may be abrasive, and is sure dirty.
But it is a solid roadbed for my uses.
Best of luck.
David