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This spring, both routes will move from 23rd Avenue S to Martin Luther King Jr. Way S between S Jackson Street and Rainier Avenue S (see map). The detour will last about one year, while the Seattle Department of Transportation makes improvements to increase safety and mobility along 23rd Avenue S.

Both routes will have the same level of service during the detour as they did before. Buses will come as often as before, during the same hours of the day.

More details below.

Route detours

  • Since there is no trolley wire on Martin Luther King Jr. Way S, all service south of E Jefferson Street has been using diesel buses since Saturday, March 10. On weekdays, continuing Route 4 riders transfer between the regular electric trolley bus and the diesel bus shuttle at E Jefferson Street. On weekends, diesel buses serve all of Route 4 so there is no need to transfer at E Jefferson Street.

    Both the weekend service and the weekday shuttle service use full-sized, accessible Metro buses that run on diesel fuel.

  • When construction begins along 23rd Avenue S on Monday, May 14, Route 4 buses will move to Martin Luther King Jr. Way S. After this move, the detoured shuttle will no longer serve 23rd Avenue S and Judkins Park (between S Dearborn Street and S Judkins Street).
  • Route 48 will serve 23rd Avenue S until Monday, May 14, when construction will require buses to move to Martin Luther King Jr. Way S.

Seattle will begin construction this spring to improve safety and mobility along 23rd Avenue S between S Jackson Street and Rainier Avenue S. Work will include street repaving, utility upgrades, sidewalk improvements, and more.

For more information about the project, visit the 23rd Avenue Corridor Improvements page   (Seattle Department of Transportation).

Contact us

Tristan Cook, King County Metro Transit
Send Tristan an email
or call 206-477-3842


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