Interstate-90 has reopened after snowy conditions closed both lanes of the highway several times throughout Sunday morning and afternoon.
Authorities are warning motorists to add additional travel time to their trips.
The Washington State Department of Transportation says motorists traveling Westbound should expect delays up to 2 hours. Eastbound drivers should expect delays up to 30-minutes.
Washington State Patrol Trooper Brian Moore urges drivers to expect delays and to slow down.