Along US 52, between Ripley and Higginsport OH, is a road that I reckon use to have some relevance to gardeners, though the area is all farm area. It is called Free Soil Rd. Even the old timers don't know why it was named that, though long after it was named, they did offer free dirt. The county would excavate places for roads or building, dump it along the road and let anyone grab it.
I had to fill in about 30 cubic yards in my backyard from where I had dug out room for an inground/above ground pool. I hauled it from a cemetery, a little over a yard at at time.
Mike