As the downtown tunnel becomes rail-only, Route 550 will operate on surface streets in downtown Seattle.
On March 23, Route 550 will no longer operate in the downtown Seattle transit tunnel. Instead, after exiting I-90 it will travel northbound on 4th Avenue and southbound on 2nd Avenue, serving most of the same stops as Route 554. Eastbound riders currently boarding at International District Station will board at 2nd Ave Ext S & Yesler Way.
Daily Customer Impact: 10,700 (100%) Longer travel time, maintain frequency