June 21, 2019 - Caltrans Public Information Officer Florene Trainor talks to Caltrans Maintenance Supervisor Randy Walker who describes the work involved in re-opening State Route 120 West, commonly known as Tioga Pass.
There is much more involved than just removing the snow from the roadway.
Source: Caltrans
Related: Caltrans District 9 Video of Removing Snow and Debris from Highway 120 West (Tioga Pass)