Finally figured out Mercer St. changes? More on the way

Finally figured out Mercer St. changes? More on the way
Rendering shows the new two-way and widened Mercer West passing underneath SR99. (Photo courtesy SDOT).

SEATTLE – Just as drivers were starting to get use to the new layout along Mercer Street, the Seattle Department of Transportation recently announced even more changes are coming soon.

The next major milestone of the Mercer Corridor Project, known as Mercer West, is scheduled to start next month, which means more lane restrictions and closures for commuters into and out of South Lake Union.
Construction on the first phase, Mercer East, started in 2010 from I-5 to Ninth Avenue North. That portion of the project included making Mercer Street into a two-way boulevard through South Lake Union.
As part of Mercer West, crews will begin extending the two-way Mercer Street to First Avenue North in Uptown, widening Mercer Street to offer drivers three lanes in each direction between Dexter Avenue North and Fifth Avenue North, and changing the four eastbound lanes to two lanes in both directions between Fifth and First Avenue North.
All of this work is scheduled to start in April and continue through mid-2015.
Here’s what drivers need to know from SDOT:
  • Mercer Street will be reduced to two eastbound lanes between Fifth Ave. N. and Dexter Ave. N. starting in May.
  • State Route 99 will also be reduced to two lanes in each direction between Harrison St. and Valley St. These lane reductions will allow crews to widen Mercer under the SR 99 overpass and reconstruct the SR 99 bridge.
  • SDOT says crews will adjust signals at the intersection of Fifth Ave. N. and Harrison St. to help with traffic flows.
  • Signals will also be included at the intersections of Dexter Ave. N. and Republican St. and Broad St. and Harrison St.
  • To help ease congestion eastbound heading towards I-5, Broad will reopen allowing for two-way traffic once construction on Mercer West begins.
Those interested in learning more about these closures and the Mercer West phase of the project can attend a public pre-construction open house this from 4:30 p.m. to 7 p.m. Thursday in the Rainier Room at the Seattle Center.
During the open house, a member of the construction team will be on hand to answer questions about this latest phase of the project.