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Mercer Corridor Project

If you need this information translated, please call (206) 733-9990.
Si necesita traducir esta información al español, llame al (206) 733-9990.

The Mercer Corridor stretches from Interstate 5 to 5th Avenue W, and has been one of the City of Seattle’s most significant transportation challenges for over 40 years. SDOT is committed to improving the Mercer Street Corridor by 2016.

Learn more about the Mercer Corridor Project or subscribe to email alerts.

Last updated 12/15/2014

Daily closures of Taylor Ave. N begin Monday, Dec. 15 for approximately one week

Taylor Ave. N will be fully closed between Mercer and Roy streets from 9 a.m. to 3 p.m. each day, beginning Monday, Dec. 15 and continuing through Friday, Dec. 19 to accommodate concrete pours.

Travelers can expect the following impacts:

  • Turns to and from Mercer St. at Taylor Ave. N will be prohibited.
  • Travelers from Queen Anne should use 5th Ave. N to access Mercer St.
  • Local access to businesses on Taylor Ave. N between Mercer and Roy streets will be maintained from Roy St.

Following this work, Taylor Ave. N will continue to be restricted to southbound travel only as crews complete work in the roadway. Please note this work is weather-dependent and may be rescheduled.

Nighttime lane restrictions on eastbound and westbound Mercer St. and southbound Dexter Ave. N week of Dec. 15

Intermittent nighttime lane restrictions will be in place on Mercer St. and southbound Dexter Ave. N to accommodate paving, drainage, and electrical work. Work will occur Monday through Thursday the week of Dec. 15, beginning each night at 8 p.m. through 6 a.m. the following morning.

Travelers can expect the following impacts:

  • The right lane of eastbound Mercer St. will be closed between 5th Ave. N and Dexter Ave. N the nights of Wednesday, Dec. 17 and Thursday, Dec. 18. Two eastbound lanes on Mercer St. will remain open at all times.
  • Westbound Mercer St. will be restricted to one lane between 9th Ave. N and SR 99, Monday through Thursday nights. One lane on westbound Mercer St. will remain open at all times.
  • Southbound Dexter Ave. N will be restricted to one lane between Roy and Mercer streets, Monday through Thursday nights. One lane on southbound Dexter Ave. N will remain open at all times.
  • Bicyclists on southbound Dexter Ave. N will be required to merge with vehicular traffic.
  • Please plan ahead and expect traffic delays.

Intermittent lane closures on Mercer St. through 2014

Mercer St. between 1st Ave. N and 9th Ave. N will have intermittent lane closures during off-peak travel times between 9:00 a.m. and 3:00 p.m. to accommodate construction activities within the work zone.  One westbound and up to two eastbound lanes will remain open on Mercer St. at all times.

Lane restrictions on 5th Ave. N between Mercer and Thomas streets through early 2015

The right lanes of northbound and southbound 5th Ave. N will have intermittent closures to accommodate electrical and sidewalk improvements through early next year. During the closure, travelers can expect the following impacts:

  • The northbound and southbound right lanes on 5th Ave. N between Mercer and Thomas streets will be closed Monday through Friday from 7 a.m. to 3 p.m.
  • The northbound right turn lane on 5th Ave. N will be closed Monday through Friday from 7 a.m. to 3 p.m. Northbound traffic on 5th Ave. N will be able to turn right onto eastbound Mercer St. from the adjacent lane.
  • One lane in each direction on 5th Ave. N will remain open at all times.

Taylor Ave. N restricted to southbound travel only through 2014

Taylor Ave. N between Mercer and Roy streets will continue to be restricted to southbound travel only as crews complete work in the roadway. Travelers from westbound Mercer St. should use 5th Ave. N to continue north into the Queen Anne neighborhood.

Reminder: Pedestrian changes throughout the corridor
Crews are continuing to complete sidewalk construction on Mercer St. and 5th Ave N. Please pay attention when walking through the corridor and follow pedestrian detour signage. New changes to pedestrian routes include:

  • The north and east crosswalks at the intersection of 5th Ave. N and Mercer St. are now closed. Pedestrians should cross Mercer St. at Taylor Ave. N or the west side of 5th Ave. N. Access to QFC and local businesses will be maintained via Taylor Ave. N and Roy St.
  • The sidewalk at the southeast corner of 5th Ave. N and Mercer St. is now open to pedestrians.
  • Intermittent sidewalk and crosswalk closures on 5th Ave. N between Harrison and Thomas streets. Please follow pedestrian signage throughout the work zone.

Pedestrian and bicycle route map

5th and Harrison streets pedestrian detour map

Third eastbound lane on Mercer St. between 5th Ave. N and 9th Ave. N now open

On Sunday, November 16, crews opened a third eastbound lane on Mercer St. between 5th Ave. N and 9th Ave. N. This new Mercer St. configuration also includes two new left turn lanes from westbound Mercer St. onto southbound 5th Ave. N and is a major milestone as the project works to complete the West Phase. Please pay attention to street signs as travelers adjust to new traffic patterns.

Map showing new configuration

Alternate routes through the corridor

With the closure of Broad St. and two-way traffic on Mercer St., Roy St., and Queen Anne Ave. N now in place, please consider using the following alternate routes during construction:

  • Use Roy St. as an alternate eastbound route through the Uptown neighborhood.
  • To access north Queen Anne, use Mercer St. and then proceed north on Queen Anne Ave. N.
  • Use eastbound Denny Way, 2nd Ave. or 5th Ave. to access I-5.
  • Use SR 99 and Elliott Ave. W as alternate routes to and from your final destination.
  • Access southbound SR 99 from Aloha or Valley streets.
  • To access northbound SR 99, use 2nd Ave. or 5th Ave. south from Denny Way and turn left on Battery St.

Route maps for navigating the corridor

Crews continue to monitor intersections throughout the corridor

We appreciate your patience as we work to improve flow throughout the corridor. Please continue to use alternate routes where possible and notify the project with any feedback, suggestions, or questions atmercerinfo@seattle.gov or (206) 419-5818.

Lane reductions on Mercer St. will continue throughout the West Phase of the Mercer Corridor Project, which is anticipated to be completed in mid-2015. Construction of this $95 million project will take approximately 2.5 years.


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