It was the DNR that won the court case, proving they own the grade.
I was told there is several hundred driveways along that grade from Houghton to Chassell. Each one of those driveway crossings would have to be maintained by the groomer, resulting in a full day run for one groomer, for just a few miles. Because of this, it was deemed as not feasible. There have been discussions about trying to get a special piece of equipment, like a UTV with tracks, a small drag on back and blower on front to do this run, but it is all just talk as the money is not there.
-John