I-90 used to have one of only a few snow sheds on the Interstate Highway System, at Snoqualmie Pass. The snowshed was used to cover the westbound lanes in the event of an avalanche, and had been removed at the end of April 2014. The Washington State Department of Transportation plans to replace the snowshed with avalanche bridges as part of a $551 million plan to widen I-90 along the east end of Snoqualmie Pass.