Dept. of Transportation
Metro Transit Division

King Street Center
201 S Jackson St
Seattle, WA 98104
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Route alternatives Route 150

Map 1: proposed Route 150.

Why make changes?
  • Improve reliability of service: Route 150 currently is a very long route traveling through multiple areas of congestion, causing the route to fall behind schedule and miss connections.
  • Provide more capacity between Kent and Seattle: Many Route 150 trips carry heavy loads with standing passengers north of Kent, where more than 90 percent of the route's ridership occurs.

Proposed changes

  • Shorten Route 150: All Route 150 trips would operate between Kent Station/Transit Center and downtown Seattle.
  • Replacement service between Auburn and Kent: New Route 180 would replace portions of routes 150 and 151 between SE Auburn, Auburn Station, and the Kent Station/Transit Center at all times (see Route 180).

Frequency and hours of service

  • More frequent buses: Route 150 would operate every 15 minutes between about 5 a.m. and 7 p.m. on weekdays, and every 15 minutes between about 8 a.m. and 7 p.m. on Saturdays. Evening and Sunday service frequencies would not change.
  • Earlier morning service: Route 150 would operate earlier in the morning, with the first trips arriving in downtown Seattle at about 5:25 a.m. weekdays and Saturdays, and at about 6:15 a.m. on Sundays.
  • Late night/early morning service: Route 150 would continue to operate every 30-60 minutes until about 1:30 a.m. seven days a week.


  • Improved reliability: Trips on Route 150 would begin and end at Kent Station/Transit Center, and would be easier to keep on schedule because the route would be shorter.
  • Shorter waits when transferring to or from other routes: The higher midday and Saturday frequency of Route 150 should help reduce transfer waits for many riders. Metro would also adjust the schedules of other routes where possible to provide shorter waits when transferring to and from Route 150.
  • Increased service where ridership is heaviest: More frequent 15-minute service would provide more seats north of Kent.
  • Earlier commute options: Earlier morning trips would provide new options for commuters to Tukwila and Seattle.
  • New Kent "pulse": Arrival and departure times in Kent would be standardized so that bus schedules are more consistent throughout the day.


  • Some riders would have to transfer: Auburn riders traveling to Seattle or Tukwila would need to transfer between Route 150 and new Route 180 at Kent Station/Transit Center.
Jan. 6, 2006