Mercer Corridor Project bidding adieu to Broad Street
Seattle drivers should prepare for big changes in the Uptown neighborhood and the area around Seattle Center. Beginning the evening of June 1, the Seattle Department of Transportation's Mercer Corridor Project will permanently close Broad Street between Ninth Avenue North and Fifth Avenue North. At the same time, Mercer Street will open to two-way traffic between I-5 and Elliott Avenue West. Roy Street (between Queen Anne Avenue North and Fifth Avenue North) and Queen Anne Avenue (between Roy and Mercer streets) will also convert to two-way operation during this time.
Travelers are advised to use alternate routes and expect lengthy delays because of the Broad Street closure and as drivers adjust to two-way operations on Mercer Street. SDOT will closely monitor the corridor during this transition period and will make adjustments to signal timing as needed. Police officers will also be stationed at key intersections to help traffic flow.
The permanent closure of Broad Street provides space for SDOT crews to widen Mercer Street to its final configuration of three lanes in each direction. The Alaskan Way Viaduct Replacement Program’s North Access team will also be working in the former Broad Street area to build connections between the future SR 99 tunnel and adjacent streets.