sentences:  Between early June and late July 2007, the Washington State Department of Transportation (WSDOT) constructed a roundabout at the SR 9 and Schopf Lane intersection, the first in Skagit County.The new roundabout reduced the length of SR 538 by .In early 2009, between I-5 and 18th Street, WSDOT repaved the highway and expanded the Riverside Drive intersection.