UPDATE: Snoqualmie Pass will no longer close Thursday night into Friday morning. Crews finished installing the LED lane markers during their first evening of work on Wednesday night.

Crews shut down the road Wednesday night into Thursday to install the lane markers.

Original story:

SNOQUALMIE PASS, Wash. – Westbound lanes of I-90 over Snoqualmie Pass will be closed from 10:00 p.m. Thursday night through 5:00 a.m. Friday morning.

Lanes were previously closed from Wednesday night at 10:00 p.m. until 5:00 a.m. Thursday.

Washington State Department of Transportation confirmed that crews are installing lane markers, prompting the closures.

Westbound traffic will be stopped at milepost 62 near the Stampede Pass Interchange. Lanes will reopen every two hours to clear traffic.

Eastbound traffic will not be impacted.

Editor's note: An earlier version of this article's headline accidentally misstated the pass would be closed Thursday and Friday nights. That was incorrect, it will be closed Wednesday and Thursday nights.