Interstate 405 saw the worst of it, with multiple collisions causing all-lane shutdowns throughout the morning. A collision on SB I-405 at NE 116th St (MP 20) in Kirkland is blocking the toll lane.

BELLEVUE, Wash. — Interstate 405 southbound fully reopened over Interstate 90 in Bellevue after a full closure due to road conditions and multiple collisions Tuesday morning, per Washington State ...

The commutes tracked were Interstate 405 (I-405) north to Bellevue ... highways connecting suburbs to urban centers experienced significant congestion, with travel times doubling in some cases.” ...