Traffic alert: 5-hour Highway 99 closure this weekend now both ways

Update on the five-hour closure planned for the Alaskan Way Viaduct this weekend – WSDOT says it will close in both directions, not just southbound as originally announced. The time frame is the same, 11:59 pm Saturday night until about 5 am Sunday morning, closed between the West Seattle Bridge and the Battery Street Tunnel. WSDOT says the closure “will allow crews to move heavy equipment across the roadway and conduct survey work.”