Where will my DUI case be heard if I was arrested on the Eastside?

It depends on which agency made the arrest and where the stop occurred. Issaquah, Snoqualmie, and North Bend cases are filed in Issaquah Municipal Court at 5415 220th Avenue SE. Mercer Island and Newcastle cases are filed in Mercer Island Municipal Court, which now operates from the second floor of Newcastle City Hall at 12835 Newcastle Way. Sammamish cases and all Washington State Patrol or King County Sheriff's Office arrests in the region are filed in King County District Court East Division — typically the Issaquah courthouse, though some WSP cases route to the Redmond courthouse depending on the trooper's assignment. Three courts, two different prosecutor offices, and three sets of procedures handle DUI cases across the Eastside.