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City of Seattle
Ed Murray, Mayor

SUBJECT: Mercer Corridor Project: 9th Avenue Re-Opening to Traffic; Westlake Avenue N Closure Scheduled to Begin Late October

10/18/2011  5:30:00 PM

Mercer Corridor Project:  9th Avenue Re-Opening to Traffic; Westlake Avenue N Closure Scheduled to Begin Late October

SEATTLE—Seattle Department of Transportation (SDOT) announces two upcoming milestones for the East Phase of the Mercer Corridor Project:

Ninth Avenue N Re-opens to Traffic

Ninth Avenue N from Aloha Street to Republican Street is tentatively scheduled to re-open to through traffic beginning October 25, weather permitting. During the closure crews successfully:

-Replaced a nearly 100-year old sewer line between Aloha Street and Republican Street
-Updated all in-street utilities including undergrounding of electrical power and private communications lines, and replacement of water mains, storm drainage lines and gas lines
-Rebuilt the roadway and sidewalks, installed irrigation lines and street light foundations in preparation for new landscaping and streetlights

The re-opened Ninth Avenue N will be temporarily configured to one northbound lane and two southbound lanes while crews work to build the new Mercer Street lanes north of the existing roadway. In 2013, Ninth Avenue N will be reconfigured to its final design, which includes a newly signalized intersection at Ninth Avenue N and Westlake Avenue N.

Westlake Avenue N Closed between Mercer Street and Valley Street

Westlake Avenue N between Mercer Street and Valley Street is tentatively scheduled to be closed to traffic beginning October 25 to allow underground utility installations and the construction of new Mercer Street lanes crossing Westlake Avenue N.

-Overnight on Monday, October 24, crews are scheduled to complete detour striping and temporary signal installation to accommodate this closure. Please note this work is weather dependant
-Traffic will be able to access businesses on Westlake Avenue N and right turns from northbound Westlake Avenue N onto Mercer Street will be permitted. This right turn lane will be signed for I-5 access only.
-Northbound Westlake Avenue N traffic from the city center will be detoured at Republican Street to Ninth Avenue N. Southbound Westlake Avenue N traffic will also use Ninth Avenue N.
-This configuration will be in place for several months while crews build new Mercer Street lanes across Westlake Avenue N

Detour route maps for vehicles, pedestrians and bicyclists, in addition to King County Metro bus stop locations, are available on the project website at:

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