Update: 7:12 PM The accident has been cleared but traffic is still slow, expect delays.
Update 7 PM: On I-90 westbound just east of 468th Ave SE (MP 33) there is a collision blocking all lanes.
Drivers are experiencing up to 1 hour of added travel time and stop & go traffic on westbound I-90 between Thorp & the summit.
Traffic delays are anticipated the last through 8 p.m. tonight.
Except for the normal small back up on the off-ramp from I90 to SR18, traffic seems to be moving well in the valley this sunny Memorial Day.