While driving the highways and byways of our great nation, I've been marveling at how smooth, planar, and plain these steep slopes are, cut into native soil and rock. The gradients are, to my understanding, typically 2:1 or a 50% slope. My question is: How are they constructed? Surely a motor grader can't side slope on a 50% grade with any safety or efficiency if it's even possible for a dare. So how are these cut faces made?
