SR 20 reopens across Cascades, SR 18 weekend closures canceled, I-405 Kirkland to Bothell weekend closures proceeding as scheduledThe SR 20/North Cascades Highway reopened at noon on Sunday, Aug. 30, following a fierce forest fire that forced the closure of the highway on Aug. 19. This weekend's full closures of SR 18 near Tiger Mountain and Auburn have been canceled because of expected wet weather. northbound I-405 is reduced to one lane all weekend between NE 124th and SR 522. Northbound ramps at NE 160th and SR 522 are also closed. For details on all of today's closures, check out our What's Happening Now page.