Sound Transit would convert Route 577 to operate as Route 578 trips on Saturdays and Sundays. Current Route 578 trips would continue to serve Sumner and Puyallup, but the new Route 578 trips would end in Auburn. The change effectively doubles weekend service between Federal Way and Auburn and makes more efficient use of operator layover time. In addition, all trips would use the current 578 routing in downtown Seattle, and Sound Transit would eliminate the current weekend 577 routing via Pine Street.
Annual Service Implementation Plan
Twice a year we change our service to respond to changing conditions and better serve our riders.