Updated: 12:15 p.m.
All lanes of westbound Interstate 90 between Interstate 405 and 148th Avenue are now cleared and traffic is returning to normal levels.
Updated: 9:56 a.m.
A crash at 8 a.m. this morning involving 13 vehicles, including a logging truck and a semi truck, is still blocking most of the lanes of Interstate 90 between Interstate 405 and 148th Avenue SE, according to the Washington State Patrol and the Bellevue Fire Department.
At least one person is reported with critical injuries, and seven people in total were taken to Harborview Medical Center or Overlake Hospital Medical Center, according to the Bellevue Fire Department.
The accident is still blocking the 3 right lanes of I-90 westbound just east of I-405, near milepost 11. The current backup is 6 miles, according to the Washington State Patrol. Fire Assistance, the Incident Response Team, Tow Assistance, and the State Patrol have arrived on the scene.
Officials are advising drivers to avoid westbound Interstate 90 and to listen to the radio traffic reports to avoid the area. The Washington State Department of Transportation reported that traffic was limited to the left general purpose lane and the HOV lane, which was opened to all vehicles. There are limited alternate routes and surface streets in the area are also backed up, so WSDOT is advising it might be better for drivers to just stay on I-90.
There is no estimate on when it will be cleared.
Mercer Island Patch will update this story with more information as it becomes available.