I rode GMR this morning. GMR was closed to bikes at about 4 miles from the gate at the bottom of the hill. Most riders were riding the 4 miles, turning back and doing it again.
I was told by a crew member working on the road, GMR will be closed to bikes Monday through Saturday from 6:30am to 6:30pm. GMR will be open to bikes on Sunday (according to the crew member). The guy told me the road work will be going on for 2 months.