CLARK COUNTY, Wash. (KPTV) – One person was killed and another was seriously injured in a head-on crash in Clark County late Sunday night. Just after 11:30 p.m., emergency crews responded to a crash on State Route 503, near milepost 12. Washington State Patrol says a 1998 Chevrolet Lumina was heading southbound when it crossed the center line and crashed head-on with a 2016 GMC Acadia.