Mercer Corridor Project: Partial closure of Fifth Avenue N at Mercer Street April 26-28

The Seattle Department of Transportation (SDOT) advises travelers of the partial closure of the intersection of Fifth Avenue N and Mercer Street scheduled for Saturday, April 26 to Monday, April 28.

Beginning the morning of Saturday, April 26 at 4 a.m. through Monday, April 28 at 5 a.m., the intersection of Fifth Avenue N and Mercer Street will be partially closed to traffic to accommodate roadway excavation and preparatory work for concrete paving. During the closure:

  • Travelers heading east on Mercer Street towards I-5 will be detoured onto southbound Fifth Avenue N to Harrison Street to eastbound Broad Street to reconnect with Mercer Street.
  • Southbound Fifth Avenue N will be fully closed to traffic between Roy and Mercer streets. Travelers heading south on Fifth Avenue N will be detoured to westbound Roy Street and Fourth Avenue N in order to reconnect with Fifth Avenue N via eastbound Mercer Street.
  • Travelers heading north on Fifth Avenue N will be detoured at Republican Street to continue north on Fourth Avenue N toward the Seattle Center and the Queen Anne neighborhood.
  • Local access to businesses and properties will be maintained at all times.
  • Pedestrians will be detoured and advance signage will be posted.
  • Travelers heading toward Queen Anne and the Seattle Center from I-5 and Downtown should use westbound Broad Street, Denny Way, and northbound First Avenue N as an alternate route.
  • Mercer Street between Taylor Avenue N and I-5, Broad Street, Dexter Avenue N, SR 99 and the I-5 on- and off-ramps at Mercer Street will remain open during the weekend work.

Please note that the work may be rescheduled for later in the event of inclement weather.

Early warning signs will be placed in advance of all detours. More information about alternate routes during construction may be found at:

Contact:  Richard Sheridan, Communications Director, 206.684.8540

SDOT to pave 17th Avenue West in the Interbay area April 24 and 25

If the weather is favorable, crews from the Seattle Department of Transportation plan to pave 17th Avenue West from West Dravus Street to West Bertona Street on Thursday and Friday, April 24 and 25.  They plan to work from 8 a.m. to 7 p.m. both days. The street will be closed to all except deliveries and local businesses.



Big draw this weekend: Sakura Con 14


Friday through Sunday, April 18 – 20, crowds of 20,000 or more are expected daily at the Convention Centedowntown for the Sakura Con 14.  Sponsored by the Asian Northwest Cultural Education Association, this is the oldest “anime” (Japanese animation) convention in the Pacific Northwest.  Other events taking place over the weekend are the Earth Day Run along Alki Beach in West Seattle on Saturday morning and a Snoop Dogg and Wiz Khalifa Concert on Saturday evening at the CenturyLink Field WAMU Theatre.   Motorists should anticipate some additional traffic associated with the events.


Friday, April 18

Seattle Symphony Friday Matinee Concert: 9 a.m. – 3 p.m.

Benaroya Hall (200 University Street)

400 attending

School buses will drop off and pick up students on both sides of University Street between Second Avenue and Third Avenue;  the Seattle Police Department will assist with the bus traffic;  expect congestion on surrounding streets.


Sakura-Con ’14:  Friday 2 – 11 p.m.; Saturday 9 a.m. – 4 a.m. Sunday; Sunday 9 a.m. – 5 p.m.

Washington State Convention Center – 800 Convention Place /Pike Street

20,000 attending per day

Expect heavy pedestrian traffic on adjacent streets.


Saturday, April 19

Earth Day Run: 9:30 – 11 a.m.

Alki Avenue SW – West Seattle

1,100 participants

Run route: Starts on Alki Avenue  SW at 60th Avenue SW; moves east on Alki to Anchor Park (1100 Alki Avenue SW), makes a U-turn and heads back to starting point.

Run will close Alki Avenue SW  from 60th Avenue SW to Anchor Park from 9 – 11 a.m.

Expect heavier traffic on streets next to Alki Avenue SW

For more details please see:


Snoop Dogg & Wiz Khalifa concert:  9 p.m.

Wamu Theater, CenturyLink Field

5,000 attending

There may be some congestion around stadium prior to the show.

CXontact:  Peg Nielsen, 206.684.8114

Eastbound Travel Lane of Denny Way by Seattle Center Closed on Saturday

The Seattle Department of Transportation will close the eastbound curb lane of Denny Way between 1st Avenue and 3rd Avenue this coming Saturday, April 19.  The lane will be closed from 8:00 a.m. until 6 p.m. to accommodate construction associated with the extension of overhead trolley electric wires.

The construction is part of the Belltown-Uptown Electric Transit Improvements Project, a collaborative effort with King County Metro, to install inbound (towards downtown) trolley wires on Denny Way (where they will connect with existing southbound service on 3rd Avenue).  This will provide a more direct routing than currently exists, and is projected to reduce travel times by two minutes per trip.

The project also includes creation of a new inbound (eastbound) bus stop on Denny Way, a bit east of 2nd Avenue.  This will replace the existing inbound stop just west of Warren Place, which is too small to adequately accommodate the large number of daily boardings at this location.  The new stop will include a bus shelter, bench, bike rack, and a real time bus arrival information sign.  (The existing inbound bus stop on Denny Way just east of 3rd Avenue will also be closed in favor of the new consolidated stop.)

Construction on the project should be completed by early June.


Contact:  Peg Nielsen, Communications Office, 206.684.8114



Mercer Corridor Project: Mercer and Roy streets transition to two-way traffic this spring; Broad Street closes this June

The Seattle Department of Transportation (SDOT) announces a major milestone for the Mercer Corridor Project with two-way traffic opening on Mercer Street between First Avenue N and Ninth Avenue N and on Roy Street between Queen Anne Avenue N and Fifth Avenue N this spring.

Construction to extend two-way Mercer Street from Ninth Avenue N to First Avenue N in Uptown began in April 2013. Over the past year, crews have completed demolition and substantial reconstruction of the SR 99 bridge over Mercer Street, relocated utilities between Fifth Avenue N and Ninth Avenue N, and completed street light upgrades, signal installations and pedestrian improvements between Queen Anne Avenue N and Fifth Avenue N.

Beginning in late April, travelers will experience major corridor changes as crews begin converting Mercer Street, Roy Street and Queen Anne Avenue N to two-way traffic. The transition to two-way traffic will occur in three phases:

  • The first phase will include shifting the two eastbound Mercer Street traffic lanes onto their permanent location on the south side of the roadway between First Avenue N and Fifth Avenue N and installing channelization for the new westbound traffic lanes.
  • At the end of this initial phase, traffic signals will be activated and Mercer Street will be opened for two-way traffic starting at First Avenue N and working toward Fifth Avenue N over a period of several days.
  • The second phase will include converting Roy Street between Queen Anne Avenue N and Fifth Avenue N to two-way traffic. During this conversion, westbound Roy Street will be reduced to one lane while final channelization is put into place. Signals will be activated for two-way traffic on Roy Street starting at Fifth Avenue N and working toward Queen Anne Avenue N over a period of several days.
  • The final phase of the transition will include opening Mercer Street to two-way traffic between Fifth Avenue N and Ninth Avenue N as well as the permanent closure of Broad Street in late May or early June. The closure of Broad Street allows for additional space to widen Mercer Street to the south at Dexter Avenue N and continue work associated with the Alaskan Way Viaduct Replacement Project

More information about traffic changes during each phase of construction can be found at:

Throughout and after the roadway transition, construction impacts will be monitored and will include:

  • Monitoring traffic flow and adjust signal timing as conditions change throughout the corridor
  • Uniformed police officers stationed at key intersections to facilitate traffic flow
  • Additional signage and alternate route information will be available in advance

After opening Mercer Street to two-way traffic between First Avenue N and Ninth Avenue N, construction will continue on Mercer Street between Fifth Avenue N and Ninth Avenue N, including the intersection of Mercer Street and Dexter Avenue N through mid-2015. The final configuration of Mercer Street between Fifth Avenue N and Ninth Avenue N will feature three lanes of traffic in each direction, widened sidewalks, and a bicycle path on the north side of Mercer Street between Dexter Avenue N and Fifth Avenue N.

Continued communication throughout construction

SDOT will continue to provide coordinated construction outreach and updated construction timelines throughout the conversion to two-way traffic, including alternate route maps, email updates and a 24-hour hotline.

To learn more about upcoming construction, SDOT invites you to join the Mercer Corridor Project listserv. You can sign up on the project website: or call 206-419-5818 to join.

Contact:  Richard Sheridan, Communications Director, 206.684.8114