Directions WASHINGTON COUNTY FAIRGROUNDS, FRIENDSHIP SQUARE & PLAZA 873 NE 34TH AVENUE, HILLSBORO, OREGON Off HWY 26 WEST, TAKE SHUTE ROAD SOUTH TO CORNELL WEST. FOLLOW SIGNS TO HILLSBORO AIRPORT/FAIRGROUNDS. Get directions to this park: Your full starting address OR town and state OR zip code Google™ Maps opens in a new window These driving directions are provided as a general guide only. No representation is made or warranty given as to their content, road conditions or route usability or expeditiousness. User assumes all risk of use. For your safety, please consult the official Oregon highway map and check road conditions at Tripcheck before leaving on your trip.