Bus Service During Snowy/Icy Weather

Find the typical snow route for your bus line

Here's what to expect from TriMet bus lines during snow/ice conditions. Conditions may change quickly, so be sure to check the Service Alerts page for the current snow route information.

Bus service during significant snow/ice conditions

When there is a significant accumulation of snow, ice or freezing rain, some buses will go on snow routes (see below) and others may be canceled entirely, depending on road conditions. Buses may not be able to serve parts of the route that are hilly or too dangerous to drive on.

Here's how each route may operate during significant snow/ice conditions:

Bus service during severe snow/ice conditions

When there are two or more days of freezing temperatures with precipitation, we may reduce bus service to a select group of high-ridership lines. (We'll make announcements on trimet.org and 503-238-RIDE if this happens.) By re-assigning buses where they are most useful, we can serve more riders and reduce the number of "stuck" buses. They won't be on schedule, but our goal is to run buses about every 15 minutes.

Here are the bus lines we plan to operate during severe snow/ice conditions (all other bus lines will be canceled):