King County advances plans for RapidRide K Line on Eastside, US July 17, 2025 | News, North America News The King County Council in Washington state has endorsed a preferred route for Metro’s next RapidRide bus project on the Eastside, known as the K Line. The 25.74km-long route will connect Kirkland’s T... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password