Check your snow route
Will your route be clear this winter?
Road Services plows and applies snow-melting treatment to 583 miles of designated snow and ice routes. During snowy weather, our main goals are to keep the major roads in Unincorporated King County open for travel, and to ensure the safety of travelers and our dedicated crews. Our snow and ice routes are categorized by number and are plowed and salted in priority order.
Winter Weather Response Map (*Temporarily offline)
Priority plow routes – Where we plow first
We prioritize clearing snow from the most heavily traveled roads:
- Major thoroughfares and arterials
- Transit routes
- Roads that serve densely populated areas or connect communities
- Life-safety routes, roads that lead to hospitals, fire stations and other emergency services
These routes are shown as Category 1 and Category 2 on the Snow Routes map. It could take up to three days or more to plow and treat Categories 1 and 2, depending on how much snow we get or how icy the roads are.
Other plow routes
After the Category 1 and Category 2 roads are clear, we move on to plow snow and apply salt to the remaining snow and ice routes along less-traveled roads and in neighborhoods (categories 2, 3, 4 and 5).
If you do not live on a Category 1 or 2 snow and ice route, be prepared for the possibility that you may need to stay home and avoid driving for up to several days during a major, countywide winter storm.
This is because snow may accumulate faster than our plows can keep up with. Crews must continue to re-plow Category 1 routes until they are all clear before moving on to Category 2 routes.
Emergency road plowing
If you have an urgent or life-threatening emergency and your road is not plowed, call 9-1-1. We collaborate with first responders to clear roads outside of our usual snow routes when instructed by 9-1-1.
Map of 2023-24 snow routes (2MB)