Source : Webster's Revised Unabridged Dictionary (1913)

Skid road \Skid road\ (Logging)
   (a) A road along which logs are dragged to the skidway or
       landing; -- called also {travois, or travoy, road}.
   (b) A road having partly sunken transverse logs (called
       skids) at intervals of about five feet.

Source : WordNet®

skid road
     n : a road made of logs on which freshly cut timber can be
         hauled