I wouldn't worry to much about it. The state of TN owns several lakes in my county and allows permitted fishing. The only roads are over the dams. There are no gaurdrails, and Tennessee being Tennessee, some of them drop at a 1 to 1 ratio or 2 to 1 ratio for 200' - 400' depending on the dam. If you don't slow your *** down, and skid off the gravel road, well, to bad so sad, I guess, according to the State, as there are no gaurdrails whatsovever.
Needless to say, people drive slowly, and there isn't much fuss over the speed limits. I'm sure one day some bozo will meet his maker there. I just hope it ain't me! :new_all_coholic:
As others have said, you know the property best. Don't discount the fact that it may be cheaper to set a track hoe and dump truck and make a less steep slope. You can haul 55 loads of clay for only maybe $2,500, if the clay is available on site or nearby.