 The highway turns northeast and terminates at an intersection with SR 20, which continues west to Burlington and east into North Cascades National Park.SR 530 is maintained by the Washington State Department of Transportation (WSDOT).The section between I-5 at Island Crossing and SR 9 in downtown Arlington is designated as a Highway of Statewide Significance by the state legislature and as a minor route of the National Highway System by the federal government.