Friends of North Creek Forest have changed its original May 12 work day to 11 a.m. to 2 p.m. May 26.
For location and more information, visit http://www.friendsnorthcreekforest.org/newsdonate.html
Council members hope the increased presence of officials will deter break-ins at trailheads.
Both directions of traffic will be closed around the clock until June 4.
For those possibly exposed to measles between April 30 and May 3, the most likely time to become sick would be between May 7 and 24.