state route mile long state highway spanning counties state washington existing highway serves connect small communities bypassed interstate section southeastern bypass highway lightly traveled passing mainly rural farmland highway parallels railway line majority route rail line highway years digit highway numbers washington indicate auxiliary routes parent route giving auxiliary routes decommissioned legislative session longer maintained route description begins exit concurrent hybrid diamond partial cloverleaf interchange route heads south farmland town highway passes double track belonging railway south end town intersects turning southeast heads south traveling southeast passes farmland passing small census designated place interchange city located north highway accessible turning highway leaves reservation turns southwest passing crosses county line continuing farmland approaching outskirts county seat serves bypass turning north intersecting desert wind east turning southwest wine country road terminating folded diamond interchange exit year conducts series surveys highways state measure traffic volume expressed terms average annual daily traffic aadt measure traffic volume average day year calculated cars traveled intersection bus road west cars passed town interchange segment highway western terminus listed list highways statewide significance marks portion highway critical connecting major communities state national_highway_system system roads important nation economy defense mobility history roadway existed connecting near current alignment roadway incomplete gap existing gap roadway completed segment numbered segment current originally numbered designations remained state highway renumbering small segment renumbered completion area continued town interstate completed truncated interstate rail line highway parallels west existed originally belonged portland seattle railway railway spring began million construction project build wider lanes shoulders city number collisions roadway improvements included installing new access ramps adding turn lanes roads project completed june major intersections related routes digit state highway numbers considered auxiliary routes digit parent route current decommissioned auxiliary routes state route mile long state highway located entirely indian reservation highway linked fort state park west east state route mile long state highway located entirely highway serves connect unincorporated community county seat state route mile long state highway located entirely serves role connecting city county seat state route mile long state highway located entirely highway serves connect link state route mile long lane state highway located entirely highway travels connects bridge listed national_register_of_historic_places
Washington State Route 22