The Collaborative International Dictionary of English v.0.48:

Skid road \Skid road\ (Logging)
   (a) A road along which logs are dragged to the skidway or
       landing; -- called also travois road or travoy road.
   (b) A road having partly sunken transverse logs (called
       skids) at intervals of about five feet.
       [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

skid road
    n 1: the district of a town frequented by loggers
    2: a road made of logs on which freshly cut timber can be hauled