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Mercer West Dexter to 5th Avenue W
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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 10/24/2014

Lane restrictions on Dexter Ave N between Roy and Republican streets October 26

On Sunday, October 26, from 7 a.m. until 1 p.m., capacity will be reduced on Dexter Ave N for underground utility work and paving. During the closure, travelers can expect the following impacts:

  • Northbound and southbound Dexter Ave N between Roy and Republican streets will be reduced to one lane in each direction.
  • Southbound left turns from Dexter Ave N to Mercer St. will be permitted.
  • Bicyclists will be required to merge with vehicular traffic.

Lane restrictions on Mercer St. and northbound 5th Ave. N October 24-27

Beginning Friday, October 24, at 11:59 p.m. and continuing through Monday, October 27 at 5 a.m., Mercer St. will be reduced to one lane in each direction between Dexter Ave. N and 5th Ave. N, and northbound 5th Ave. N will be reduced to one lane between Republican and Roy streets as crews pave a portion of the roadway. This work is a critical step towards adding an additional eastbound lane on Mercer St., anticipated to open in late November. During the closure, travelers can expect the following impacts:

  • Eastbound and westbound Mercer St. will be reduced to one lane in each direction between Dexter Ave. N and Taylor Ave. N.
  • Northbound 5th Ave. N will be reduced to one lane between Republican and Roy streets.
  • Taylor Ave. N will remain southbound only at Mercer St.
  • Please plan ahead and use alternate routes when possible.
  • This work is weather dependent and may be rescheduled if inclement weather occurs.

Please note, work will occur throughout the weekend and may include nighttime construction activities which may be noisy in the surrounding area. Please call our 24-hour construction hotline at 206-419-5818 if you have questions or concerns about noise. This work is weather dependent and may be rescheduled if inclement weather occurs.

Pedestrian detours and lane restrictions at the intersection of 5th Ave. N and Harrison St., beginning Monday, October 27

Beginning Monday, October 27, and continuing for approximately three weeks, crews will be working on sidewalk and signal improvements at the intersection of 5th Ave. N and Harrison St. During this work, travelers can expect the following impacts:

  • 5th Ave. N between Republican and Broad streets will be restricted to one lane in each direction weekdays, from 9 a.m. until 3 p.m.
  • The north, east, and south crosswalks at this intersection will be closed to pedestrians. The crosswalk on the west side of the intersection will remain open.
  • Pedestrian detour map available here.

Full closure of 4th Ave. N and Republican St. between 5th Ave. N and Mercer St. Oct. 14-24

Beginning Tuesday, Oct. 14 and continuing for ten days, 4th Ave. N and Republican St. between 5th Ave. N and Mercer St. will be fully closed to traffic as crews conduct street and sidewalk improvements. Travelers can expect the following impacts:

  • Full closure of 4th Ave. N and Republican St. between 5th Ave. N and Mercer St., Oct. 14-24.
  • Sidewalks will be closed on the west side of 4th Ave. N and the south side of Republican St.
  • Drivers accessing the Memorial Stadium parking lot should use the Harrison St. entrance and exit only.

Daytime lane restrictions on 5th Ave. N between Republican and Mercer streets through October

The right lanes of northbound and southbound 5th Ave. N will be closed to accommodate electrical and sidewalk improvements at the southeast corner of 5th Ave. N and Mercer St. through October. Travelers can expect the following impacts:

  • One northbound and one southbound lane on 5th Ave. N between Republican and Mercer streets will be closed Monday through Friday from 9:00 a.m. to 3:00 p.m. daily.
  • Northbound traffic on 5th Ave. N will be able to turn right onto eastbound Mercer St. from the adjacent lane.

Pedestrian changes on Mercer St. at 5th Ave. N

The sidewalk at the southeast corner of Mercer St. and 5th Ave. N will be closed to pedestrians through October while crews complete sidewalk restoration. Pedestrians can expect the following changes:

  • Crosswalks on the north and west sides of the intersection will be open.
  • Crosswalks on the south and east sides of the intersection will be closed.
  • A new crosswalk is open on Mercer St. at Taylor Ave. N to facilitate east-west travel on Mercer St. between 5th Ave. N and Dexter Ave. N.

Pedestrian and bicycle route map

Intermittent lane closures on Roy Street through 2014

Roy Street between Fifth Avenue N and Queen Anne Avenue N will continue to have intermittent lane closures during off-peak travel times between 9:00 a.m. and 2:00 p.m. to accommodate construction activities within the work zone. Please pay attention to flaggers stationed in the roadway.

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 lane on westbound and eastbound Mercer St. will remain open at all times.

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.

In its final configuration, Mercer St. will maintain three lanes in each direction between 5th Ave. N and I-5. All lanes will be operational by the summer of 2015. Until that time, Mercer St. will operate in a temporary configuration with two lanes in each direction.

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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