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.]