here in wyo ive seen it done several ways, 1, just rip the asphault with a dozer load it in scrapers and bury it somewhere in a deep fill off of the mainline, 2, mill it and the trucks take it away somewhere i guess they used it for something should have paid more attention, on one job they milled the top few inches put it in piles and we used it for the detours, as we finished the dirt to grade we put the millings on top and it worked really well for traffic to travel on, then after the dirt grade then the base lastly they paved, after the paving the state runs a mini van with tinted windows so you cant see the hundreds of thousands of dollars of special equipment inside, they drive it up and down the new highway every inch at different speeds, the special van reads the road takes all the unacceptable bumps and marks them, they give this info to the grinding company, the grinders ive seen were big box looking things that looked like a ice hocky rink shaver, they always have a water truck attached to it, im usually putting on topsoil while they are grinding so i got alot of close looks at these special machines, i know they get paid by the grind and its not cheap.
