Tioga Road Progress Report

In Tioga Pass Road

The following is taken from Yosemite National Park Tioga and Glacier Point Plowing Update 

 

April 23, 2012.  Tioga Road: Plows have reached Olmsted Point and crews will assess the avalanche zone tomorrow.

Despite the below-average snowpack, full avalanche precautions are still in place.

There is no estimated opening date for the Tioga Road.

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Once plowing of the Tioga Road is completed, additional work must be completed before the road can safely be opened.

Factors affecting plowing operations:

  • Avalanche zones (26 potential areas). The Olmsted Point avalanche zone requires a lot of work, including application of charcoal over the snow to help with melting and blasting the snow slab to make it safer for personnel.
  • Heavy snow pack slows the whole operation.
  • Trees that have fallen across the road and been buried in the snow. These can cause substantial damage to the equipment and result in a stop to all operations until they’re cleared.
  • Rock slides buried by the snow. These can cause substantial damage to the equipment and result in a stop to all operations.
  • Snow storms during the opening require a stop to Tioga Road operations and in order to plow and sand the park roads.
  • Road repairs and ditching and brushing operations once snow has melted back enough

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