UPDATE, 9 a.m. | The Everett-to-Seattle commute is now up to 130 minutes, the same as Tuesday, according to the Washington State Department of Transportation.
Seattle Department of Transportation reports two stalls on the West Seattle Bridge before Delridge, adding to existing congestion.
WSDOT crews are working to drain large puddles on the freeways as well.
UPDATE, 8:20 a.m. | WSDOT travel times: Everett to Seattle is now at two hours, Lynnwood to Seattle is 1.5 hours, Woodinville to Seattle about 1.5 hours and Federal Way to Bellevue is 75 minutes.
UPDATE, 8:05 a.m. | Traffic remains heavy throughout the region. WSDOT reports 110 minutes for Everett-to-Seattle commute.
UPDATE, 7:50 a.m. | A collision eastbound on the West Seattle Bridge is blocking the three left lanes, causing long delays, according to the Seattle Department of Transportation. Use alternate routes.
Heavy rains are expected to add to the congestion around the area, WSDOT warns.
UPDATE, 6:50 a.m. | The earlier collisions on NB I-5 near 200th Street (Kent/SeaTac area) has created about 10 miles of backup extending into Pierce County, the WSDOT said in a tweet.
UPDATE, 6:40 a.m. | The accidents have been cleared, but I-5 is still backed up to the Pierce-King county line, the WSDOT reports.
There were three separate collisions with 11 cars involved, Trooper Chris Webb said. One subject was transported with serious injuries.
ORIGINAL POST | Headed north toward Seattle? Avoid Interstate 5 and leave early no matter what route you take, the Washington State Department of Transportation warns.
A multi-car collision on I-5 near South 200th Street in Kent has traffic blocked for more than six miles, according to reports on KIRO.
A second accident further south within the backup has added to the congestion, according to reports.
Troopers continue to investigate the collision and the HOV lane remains blocked, Trooper Chris Webb said in a tweet. Tow trucks are at the scene.