"I-90 Snowshed Removal Time Lapse". YouTube. Washington State Department of Transportation. April 16, 2016. Archived from the original on 2021-12-21. Retrieved June 21, 2017.
"I-90 Snowshed Removal Time Lapse". YouTube. Washington State Department of Transportation. April 16, 2016. Archived from the original on 2021-12-21. Retrieved June 21, 2017.