Nighttime lane restrictions on Valley St. and Terry Ave. N beginning tonight, Monday, December 17

SDOT announces nighttime lane restrictions on Valley St. and Terry Ave. N beginning tonight, Monday, December 17 through December 20 to accommodate underground water main work. Westbound Valley St. will be restricted to one lane between Boren Ave. N and Westlake Ave. N while crews work in the center lane. Additionally, Terry Ave. N will be restricted to southbound traffic only between Valley St. and Mercer St. while crews work on the east side of the roadway.

Nighttime lane restrictions will be from 7:00 p.m. to 5:00 a.m. Flaggers will be positioned to maintain traffic flow and assist vehicles and equipment entering and exiting the work zone.

Weekend closure of Fairview Ave. N between Mercer St. and Valley St., December 15-17

SDOT announces a weekend closure of Fairview Ave. N between Mercer St. and Valley St. beginning Saturday, December 15 at 8:00 a.m. through Monday, December 17 at 5:00 a.m. to accommodate the installation of an underground electrical vault. Traffic headed north on Fairview Ave. N will be temporarily routed onto westbound Mercer St. to Terry Ave. N to connect back to northbound Fairview Ave. N. Uniformed Police Officers will be positioned along the detour route to assist with traffic flow.

Please note, this work requires a weekend shutdown of the South Lake Union Streetcar. Streetcar operations will resume Monday, December 17.

Eastbound Mercer St. lane restrictions beginning Monday, December 10

SDOT advises travelers of upcoming lane restriction on eastbound Mercer St. beginning Monday, December 10 for approximately two weeks to accommodate the installation of new signal poles and mast arms at the intersection of Mercer St. and Fairview Ave. N. Two eastbound lanes on Mercer St. will remain open to traffic between Terry Ave. N and Fairview Ave. N. Work will occur on weekdays during non-peak hours from 9:00 a.m. to 3:00 p.m. Vehicles will be routed around the work zone and a uniformed police officer will be positioned to facilitate traffic flow.

Seattle Marathon roadway impacts on Sunday, November 25:

On Sunday, November 25, the Seattle Marathon will take place and temporary lane closures within the Mercer Corridor Project area will occur during the race, including:

• Republican St. will be closed from Eastlake Ave. E to Dexter Ave. N
• Fairview Ave. N will be closed from Harrison St. to Mercer St.

Lane restrictions will occur from 8:00 a.m. to 4:00 p.m. Local access will be allowed on one side of the street only. Officers from the Seattle Police Department will be positioned to monitor road closures and facilitate traffic flow. For more information about the Seattle Marathon including a map of the race route, please visit: http://www.seattlemarathon.org/index.php.  

Mercer St. lane restriction the evening of Monday, November 26 followed by Fairview Ave. N traffic switch:

In preparation for switching northbound Fairview Ave. N traffic onto the east side of the roadway between Mercer St. and Harrison St., crews will restrict two lanes on Mercer St. between Boren Ave. N and Fairview Ave. N beginning at 7:00 p.m. on Monday, November 26 to adjust signal heads. Officers from the Seattle Police Department will be onsite at the intersection of Mercer St. and Fairview Ave. N to facilitate traffic flow.

Immediately following the signal head adjustment at the intersection of Mercer St. and Fairview Ave. N, northbound traffic on Fairview Ave. N will be shifted from the west side of the street to the east side as crews complete utility installation, install streetlights and rebuild the roadway and sidewalks between Mercer St. and Harrison St. Access to businesses and driveways on the west side of Fairview will be maintained during this work.

Please note, the crosswalk at Fairview Ave. N and Republican St. will remain open to east/west pedestrian traffic as much as possible during construction. If a closure of the crosswalk is necessary in order to maintain safety, advanced notice will be given.
Construction on Fairview Ave. N is anticipated to be complete in February 2013. 

Temporary lane restrictions on 9th Ave. N and Valley St. beginning Wednesday, November 28:

Temporary lane restrictions will occur on 9th Ave. N and Valley St. beginning November 29th through mid-December to accommodate removal of overhead transmission lines and poles. Closures will occur intermittently as follows:

• On weekdays during non-peak traffic hours, between 9:00 a.m. and 3:00 p.m. on 9th Ave. N and Valley St.
• During the evenings of December 3rd-5th from 7:00 p.m. to 5:00 a.m. on Valley St. between Westlake Ave. N and Fairview Ave. N

During these lane restrictions traffic will be routed around the work zone and uniformed police officers will be onsite at affected intersections to facilitate traffic flow.

Temporary nighttime closure of Fairview Ave. N between Mercer St. and Valley St. on Thursday, October 25

SDOT announces a temporary nighttime closure of Fairview Ave. N between Mercer St. and Valley St. on Thursday, October 25, to accommodate underground water main work.
Closure hours are 7:00 p.m. on Thursday evening to 6:00 a.m. Friday morning. Traffic headed north on Fairview Ave. N will be temporarily routed around the closure via westbound Mercer St. to Terry Ave. N, then northbound on Terry to Valley St. and then eastbound on Valley St. Police Officers will be positioned along the detour to assist with traffic flow.

Temporary lane restrictions on Sunday, October 21, for artwork installation

To accommodate artwork installation in the median of the roadway, SDOT will temporarily close lanes on Mercer St. on Sunday, October 21. Mercer St. will have one eastbound lane and two westbound lanes closed between Fairview Ave. N and Terry Ave. N from 9:00 a.m. to 3:00 p.m. while work is being completed.

Nighttime single-lane closures on I-5 on- and off-ramps at Mercer St. beginning Thursday, October 4

Intermittent nighttime single-lane closures will be implemented on the I-5 on- and off-ramps at Mercer St. beginning Thursday, October 4 for approximately one week. Lane closures are expected to be weeknights, from 7:30 p.m. to 6:00 a.m. Please note: No work will occur during the weekend of October 5-7. These overnight single-lane closures accommodate sign bridge foundation installation and median work on the I-5 on- and off-ramps necessary for completing the final configuration of the intersection at Mercer St. and Fairview Ave. N.

Temporary lane revision on westbound Mercer St. west of 9th Ave. N

Beginning Thursday, September 27, and continuing for approximately two weeks, westbound Mercer St. lanes will be routed around a small construction work zone west of 9th Ave. N. Both westbound lanes of Mercer St. will remain open to traffic during this work. This lane revision accommodates electrical cable installations.

Next full weekend closure of I-5 on- and off-ramps at Mercer St. scheduled for September 21 - 24

A full weekend closure will occur the following weekend in September:

• September 21 - 24

Closure hours are scheduled to begin Friday at 11:00 p.m. to Monday at 5:00 a.m. Please note that work is dependent on weather and availability of materials and is subject to cancelation.

Detour route maps are available to and from I-5:

Access to I-5
Access from I-5

Detour routes will be signed on roadways and may be heavily used, particularly Denny Way both eastbound and westbound. Travelers are advised to consider alternate routes to their destinations such as SR 99 or alternate I-5 exits and entrances. During the weekend closure, Valley St. will be re-opened to two-way traffic between Westlake Ave. N and Fairview Ave. N, but will revert back to no westbound through-access to Fairview Ave. N on Monday morning at 5:00 a.m.

Please note that all South Lake Union businesses will remain open and will be accessible via alternative routes.

During these closures, the I-5 on-ramp at University St. will be concurrently closed to provide more efficient traffic flow around the closed Mercer St. exit lane. Fairview Ave. N will also be closed between Mercer St. and Valley St. and Mercer St. will be closed to through traffic between Westlake Ave. N and Fairview Ave. N. All detour routes will be clearly marked to support traffic flow around the closures.

Temporary pedestrian and bicycle route revisions along Fairview Ave. N and Valley St., beginning September 18

Pedestrian and bicycle detour routing will shift to the southeast side of Fairview Ave. N between Aloha St. and Boren Ave. N beginning September 18 for up to six weeks. This revision will accommodate underground electrical installations near the intersection of Fairview Ave. N and Valley St. which requires the existing single southbound lane of vehicle traffic on Fairview Ave. N to be shifted to the east to maintain safety for travelers. Pedestrians and bicyclists will be directed to the southeast side of Fairview Ave. N between Aloha St. and Valley St., and to use the coned pathway through the work zone at the intersection of Fairview Ave. N and Valley St. to continue westbound on Valley St. See the construction flyer for additional detail.

Mercer and Dexter intersection enhanced to address drivers blocking

To address the problem of drivers blocking the intersection and preventing traffic from moving, SDOT striped the Mercer St. and Dexter Ave. N intersection, and hung more noticeable overhead warning signs. The Mercer East project is additionally deploying uniformed police officers at the intersection on Monday, September 17, from 7:00-11:00 a.m. and from 3:00-7:00 p.m. to reinforce the law’s requirements with noncompliant drivers.

With Mercer East project construction continuing through summer 2013 and major roads like Fairview Ave. N currently closed, the street modifications will help prevent drivers from “blocking hte box” and aid traffic in moving along the corridor. SDOT continues to monitor and adjust the signal timing through the corridor to best support all traffic flow.

Due to the scheduled partial shutdown of the city Data Center over the Labor Day weekend, the Mercer Corridor Project email address (mercerinfo@seattle.gov) will not be functional between Friday, August 31, and Monday, September 3. If you have questions about the Mercer Corridor Project during that time, please call the 24-hour construction hotline at 206-419-5818.

Bumbershoot traffic use westbound Mercer St. to reach Seattle Center
SDOT advises travelers heading to Bumbershoot to use westbound Mercer St. to reach Seattle Center. Increased signage for Seattle Center will be in place on the I-5 off-ramps beginning Thursday, August 30, indicating that travelers heading to Seattle Center should continue straight onto westbound Mercer St. to reach it.

Mercer St. opens to two-way traffic on August 27

In a major step towards solving the decades- long “Mercer Mess,” SDOT announces that Mercer St. will open to two-way traffic on August 27 following the full weekend closure of the I-5 on- and off-ramps on August 24-27. While significant work remains on Fairview Ave. N and Valley St., by achieving this major milestone the Mercer Corridor Project (East Phase) will move into its third stage, continuing progress toward final completion next summer.

Full weekend closure of I-5 on- and off-ramps at Mercer St. August 24-27

During the next full weekend closure of the I-5 on- and off-ramps at Mercer St., crews will complete the final work necessary for opening Mercer St. to two-way traffic, including concrete pavement, lane striping and signal installation. Ramp closure hours will be from Friday at 11:00 p.m. to Monday at 5:00 a.m. Detour routes shown will be signed on roadways and may be heavily used, particularly Denny Way both eastbound and westbound.

During these closures, the I-5 on-ramp at University St. will be concurrently closed to provide more efficient traffic flow around the closed Mercer St. exit lane. Fairview Ave. N will also be closed between Mercer St. and Valley St., and Mercer St. will be closed to through traffic between Westlake Ave. N and Fairview Ave. N. All detour routes will be clearly marked.
Beginning Thursday, August 23, a single lane on Mercer St. will be closed between Boren Ave. N and the Mercer St. I-5 on-ramps to accommodate median work near Fairview Ave. N that will facilitate the transition to two-way traffic on Mercer St. The closure will be in effect beginning Thursday, August 23, at 7:00 p.m. through Friday, August 24, at 11:00 p.m., when the full weekend ramp closure will commence.

Mercer St. opens to two-way traffic; Stage 3 Fairview Ave. N restrictions begin August 27

Mercer St. will open to two-way traffic immediately following the full weekend closure of the I-5 on- and off-ramps at Mercer St. The new roadway will then accommodate three lanes of westbound traffic that will travel straight off the I-5 off-ramps. Eastbound Mercer St. will maintain three lanes onto the I-5 on-ramps, in addition to a left turn lane onto northbound Fairview Ave. N and travel across Fairview Ave. N that allows eastbound access to Eastlake and Capitol Hill.
Stage 3 of the Mercer Corridor Project commences when Mercer St. is opened to two-way traffic and will include severe restrictions on Fairview Ave. N. Roadway users will see:

• One northbound travel lane on Fairview Ave. N between Harrison and Valley streets
• No access to Fairview Ave. N via Republican St. and no southbound access at the I-5 off-ramps at Mercer St.
• One southbound lane on Fairview Ave. N from Aloha St. that connects to westbound Valley St.
• Valley St. closed to eastbound traffic east of Terry Ave. N
• Access maintained to Lake Union Park and businesses in Chandler’s Cove

This temporary configuration will be maintained during Stage 3 of construction as crews complete work on Fairview Ave. N and Valley St.  The work includes: undergrounding of electrical distribution, transmission and communication lines; replacement or relocation of water, sewer, and storm drainage systems; relocation of gas lines; widening Fairview Ave. N between Republican St. and Valley St.; and the installation of new pavement, sidewalks, signals, lighting, signage, intelligent transportation systems, landscaping and urban design features. Stage 3 is anticipated to continue through early 2013.

Impacts to transportation services

Due to construction on Fairview Ave. N, King County Metro Transit will temporarily reroute Routes 70/71/72/73, 83 and 309 beginning 7:00 p.m. Friday, August 24. Buses will shift their routes off of Fairview Ave. N and travel instead on Eastlake Avenue N. A map of the reroute plan is on the King County Metro Transit website.

Also note that, unlike past weekend ramp closures, this closure will require the Seattle Streetcar to be shut down in order to accommodate the undertaking of opening Mercer to two-way operations and progress the project into Stage 3 construction.  The Streetcar closure hours are to begin on Friday evening at 11:00 p.m. and extend to Monday morning at 5:00 a.m.
Previously Announced August 10-13 Weekend Closure Revised
SDOT announces the cancelation of the August 10 – 13 full weekend closure of the I-5 on- and off-ramps at Mercer St.

In lieu of a full weekend closure of the I-5 on- and off-ramps at Mercer St., Fairview Ave. N will be fully closed between Mercer St. and Republican St. August 10 - 13.

This less extensive weekend closure accommodates concrete panel replacement in preparation for opening Mercer St. to two-way traffic in late summer or early fall of this year. Traffic coming from the I-5 off-ramps at Mercer St. will be directed north via Valley St. No access to southbound Fairview Ave. N from the I-5 off-ramps at Mercer St. will be permitted during the closure.

Closure hours will be from Friday at 7:30 p.m. to Monday at 5:00 a.m. Please note the I-5 on- and off-ramps at Mercer St. will remain open at all times.

On Thursday, August 9, crews will conduct preliminary survey work necessary for the weekend Fairview closure. Fairview Ave. N will be fully closed between Mercer and Republican streets the evening of Thursday, August 9, from 7:30 p.m. to Friday at 5:00 a.m. Fairview Ave. N will be fully open during the day on Friday, August 10.

SDOT announces a major milestone for the Mercer Corridor Project, as two-way traffic on Mercer St. approaches

SDOT will reach a major milestone in late summer or early fall this year when westbound lanes on Mercer St. are opened to travelers and Mercer St. accommodates two-way traffic for the very first time.

In 2010, the City of Seattle received $30 million from a federal Transportation Investments Generating Economic Recovery (TIGER) Grant, completing the City’s project funding package and allowing the City to move forward with transforming Mercer St. into a widened, two-way boulevard, linking South Lake Union, the Seattle Center and a host of neighborhoods and businesses to the rest of the Puget Sound region. Construction to date has included:

• Demolition of eight buildings north of Mercer St. to accommodate future westbound Mercer St. lanes
• Replacement of a nearly 100-year old sewer line on 9th Ave. N between Aloha St. and Republican St.
• Replacement, relocation, or reconstruction of water, sewer, and storm drainage systems
• Undergrounding of major utility lines including distribution, transmission, and  communication lines on Mercer St. between Dexter and Minor avenues, 9th Ave. N, Roy and Republican streets
• Widening of Mercer St. up to 80 additional feet to accommodate new westbound lanes, a median, and widened sidewalks
• New sidewalks, streetlights, signals, intelligent transportation systems, signage, landscaping, and urban design features along Mercer St.

Stage 3 of Mercer East to Begin Following Mercer St. Opening to Two-Way Traffic

Stage 3 of Mercer Corridor Project construction will commence immediately following a weekend closure of the I-5 on- and off-ramps at Mercer St. required in order to accommodate the opening of two-way traffic on Mercer St. During this phase, Mercer St. will accommodate three lanes of new westbound traffic that will continue straight off the Mercer St. I-5 off-ramps. Eastbound Mercer St. will maintain three lanes onto the I-5 on-ramps, in addition to a left turn lane onto northbound Fairview Ave. N and a through lane across Fairview Ave. N to Mercer St. to allow for eastbound access to Eastlake and Capitol Hill.
In the week following Mercer St. opening to two-way traffic, severe restrictions on Fairview Ave. N and Valley St. will begin and will include:

• One northbound travel lane on Fairview Ave. N between Harrison and Valley streets
• No access to Fairview Ave. N via Republican St. and no southbound access at the I-5 off-ramps at Mercer St.
• One southbound lane on Fairview Ave. N from Aloha St. that connects to westbound Valley St.
• Valley St. closed to eastbound traffic east of Terry Ave. N
• Access maintained to Lake Union Park and businesses in Chandler’s Cove

Two-way Mercer St. Detour Map

This temporary configuration will be maintained during Stage 3 of construction as crews complete work on Fairview Ave. N and Valley St. including undergrounding of, electrical distribution, transmission and communication lines, replacement or relocation of water, sewer, and storm drainage systems, relocation of gas lines, widening Fairview Ave. N between Republican St. and Valley St., installation of new pavement (including bike lanes), sidewalks, signals, lighting, signage, intelligent transportation systems, landscaping, and urban design features. Stage 3 is anticipated to continue through early 2013. SDOT will announce the traffic switch date as soon as it is confirmed.

West Phase of the Mercer Corridor Project to Begin Early 2013

The West Phase of the Mercer Corridor Project will reconstruct the SR-99 bridge over Mercer St. to continue a widened, two-way Mercer St. between 9th Ave. N and 5th Ave. N. Both Mercer and Roy streets west of 5th Ave. N will also be converted to two-way streets. In June, Mercer West received a $14 million TIGER Grant, rounding out the funding for the project.  Construction is expected to begin early next year and extend through 2015. More information about Mercer West is available online at http://www.seattle.gov/transportation/mercer_west.htm.

Upcoming Fairview Ave. N lane restrictions beginning August 7
SDOT advises travelers of upcoming lane restrictions on Fairview Ave. N to accommodate underground utility work. The following traffic restrictions will be implemented in August:

August 7: Nighttime lane restrictions on Fairview Ave. N
One northbound lane of Fairview Ave. N between Republican St. and Mercer St. will be restricted the evening of August 7 to accommodate underground utility work. One northbound lane of Fairview Ave. N will remain open at all times. Night work will be from 7:30 p.m. to 5:00 a.m. Please note this work is anticipated to take one night to complete but may extend to an additional evening if needed.

August 13- 24: Lane restrictions on southbound Fairview Ave. N
Fairview Ave. N will have one southbound lane restricted between Aloha St. and Valley St. to accommodate underground electrical work for approximately two weeks. Travelers can expect:

• One southbound lane of Fairview Ave. N restricted 24 hours a day between Aloha St. and Valley St.
• One southbound lane of Fairview Ave. N remaining open at all times
• Access maintained to businesses located in Chandler's Cove

Nighttime lane restrictions on Fairview Ave. N: Thursday, July 19; Additional lane restrictions through August

SDOT advises travelers of construction activities in the Mercer Corridor Project area beginning Thursday, July 19:

Thursday, July 19:

• Nighttime Fairview Ave. N lane restrictions
  Fairview Ave. N will have a single southbound lane closed between Mercer St. and Republican St. on Thursday night, July 19, to accommodate underground catch basin work. This closure will also restrict one left-turn lane on the Mercer St. I-5 off-ramps onto southbound Fairview Ave. N. Closure hours will be from 7:00 p.m. to 6:00 a.m. One left-turn lane from the Mercer St. I-5 off-ramps onto southbound Fairview Ave. N will remain open at all times.

Continuing through late July:

• Nighttime lane restrictions on Fairview Ave. N
  Previously announced nighttime lane restrictions on Fairview Ave. N have been extended through late July to accommodate a water main installation across Fairview Ave. N. near Valley St. Travelers can expect:
• Intermittent closures of one northbound turn lane from the Mercer St. I-5 off-ramps onto Fairview Ave. N.
• North and southbound Fairview Ave. N traffic routed around the closure near Valley St.
• Intermittent closures of Valley St. between Fairview Ave. N and Minor Ave. N.
• Night work between 7:30 p.m. and 6:00 a.m.

Continuing through late August:

• Intermittent Mercer St. single lane closures
  Previously announced single lane closures on Mercer St. between 8th Ave. N and Fairview Ave. N have been extended through late August. These short-term closures are necessary to complete installation of new signal and street lighting infrastructure and installation of new landscaping on Mercer St. in preparation for opening 2-way Mercer St. in late summer or early fall. Closures will occur intermittently on weekdays during non-peak traffic hours, between 9:00 a.m. and 3:00 p.m.

Preliminary work in preparation for weekend closure on Fairview Ave. N, July 5 – 6
On July 5 and 6, crews will conduct preliminary work including, surveying, pavement saw cutting and demolition on Fairview Ave. N in preparation for the weekend closure. In order to accommodate this work prior to noise-restricted hours, the following traffic restrictions will be implemented:

• Southbound Fairview Ave. N will be closed between Mercer St. and Republican St. from 7:30 p.m. to 11:00 p.m. on July 5 and 6. This closure will restrict southbound Fairview Ave. N access from the I-5 off-ramps at Mercer St. All traffic using the I-5 off-ramps at Mercer St. will be directed north via Valley St.

Westlake Ave. N re-opening to traffic, July 5; 9th Ave. N closure scheduled to begin July 6

SDOT announces two upcoming milestones for the East Phase of the Mercer Corridor Project:

Westlake Ave. N re-opening to traffic
Westlake Ave. N between Mercer St. and Republican St. is tentatively scheduled to re-open to through traffic beginning July 5, weather permitting. During the closure, crews successfully:

• 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.
• Completed the work on-time in preparation for two-way Mercer St. opening in late summer or early fall this year.

9th Ave. N closed between Mercer St. and Republican St.
9th Ave. N between Mercer St. and Republican St. is tentatively scheduled to close to traffic beginning July 6 to allow underground utility installations and construction of new Mercer St. lanes crossing 9th Ave. N. This closure allows crews to complete the final section of the new Mercer St. roadway.

• Beginning at 9:00 a.m. on Friday, July 6, crews will begin implementing the closure of 9th Ave. N between Mercer St. and Republican St. Traffic control and detour signage will be put into place and signal timing will be adjusted accordingly.
• Traffic will be able to access businesses on 9th Ave. N south of Mercer St. via Republican St.
• Northbound 9th Ave. N traffic from the city center will be detoured at Republican St. to Westlake Ave. N. Southbound 9th Ave. N traffic north of Mercer St. will turn left onto Mercer St. and use Westlake Ave. N to continue south towards the city center.
• This configuration will be in place for several months while crews build new Mercer St. lanes across 9th Ave. N.

Detour route maps for vehicles, pedestrians and bicyclists in addition to King County Metro bus stop locations are valid as of July 5, 2012, and are available below:

Vehicle Detour Map
Pedestrian and Bicycle Detour Map
King County Metro Bus Stop locations

Intermittent single lane closures on Mercer St. between 8th Ave. N and Fairview Ave. N:  June 25 through mid-July

SDOT advises travelers of upcoming single lane closures on Mercer St. between 8th Ave. N and Fairview Ave. N beginning June 25 and continuing through mid-July.
These short-term closures are necessary to complete installation of new signal and street lighting infrastructure on Mercer St. in preparation for opening 2-way Mercer St. in late summer or early fall. Closures will occur intermittently on weekdays during non-peak traffic hours, between 9:00 a.m. and 3:00 p.m.

Lane Restrictions on Fairview Ave. N beginning Monday, June 18
Beginning June 18 through June 22, Fairview Ave. N will have one southbound lane of Fairview Ave. N restricted for restricted 24 hours a day between Aloha St. and Valley St. Travelers can expect:

• One southbound lane of Fairview Ave. N restricted 24 hours a day between Aloha St. and Valley St.
• One southbound lane of Fairview Ave. N remaining open at all times
• Access maintained to businesses located in Chandler's Cove

Nighttime-only lane restrictions on Fairview Ave. N will begin June 25 and will continue for approximately three weeks. Travelers can expect:

• Closure of one northbound turn lane from the Mercer St. off-ramps onto Fairview Ave. N
• North and southbound Fairview Ave. N traffic routed around the closure

Night work between 7:30 p.m. and 6:00 a.m. on weekdays, and 24 hours a day on weekends, excluding the weekend of June 30 - July 1.

Nighttime Lane Restrictions on Fairview Ave. N and Valley St., Tuesday, June 12

SDOT advises travelers of nighttime lane closures on Fairview Ave. N and Valley St. beginning Tuesday, June 12 and will continue through the week as needed. One northbound turn lane from the Mercer St. off-ramps onto Fairview Ave. N will be closed during this time. Traffic turning left from Fairview Ave. N onto Valley St. will be restricted to one lane as crews complete underground water work on Valley St. at Boren Ave. N. One westbound lane and one eastbound lane will remain open on Valley St. Night work will occur between 7:30 p.m. and 6:00 a.m.

"Greenroads" improvements coming to Mercer St.

Check out the SDOT Blog to learn more about the Mercer Corridor Project’s Greenroads rating, innovative design, and construction methods!

Intermittent nighttime closures of northbound 9th Ave. N between Mercer and Republican streets: May 21 – June 1

SDOT advises travelers of intermittent nighttime lane closures of northbound 9th Ave. N between Mercer St. and Republican St. occurring the week of May 21 – June 1.
The northbound lanes of 9th Ave. N will be closed at night from 8:00 p.m. to 6:00 a.m. to accommodate communication line installations crossing the roadway. Drivers heading northbound on 9th Ave. N will be detoured to 8th Ave. N or Dexter Ave. N. via Republican St. Southbound 9th Ave. N will remain open.

One full weekend closure of I-5 on- and off-ramps at Mercer St. scheduled for May

A full weekend closure of the I-5 on- and off-ramps at Mercer St. is scheduled for the following weekend:

• May 11 – 14

Closure hours are scheduled for Friday at 11:00 p.m. to Monday at 5:00 a.m. During the closure, crews will be installing storm drainage infrastructure, electrical work to accommodate future lighting and signals, and laying concrete and asphalt paving in preparation for new, widened on- and off-ramps at Mercer St. Note that this work is dependent on weather and availability of materials and is subject to cancelation.

On May 10 and May 11, crews will conduct preliminary work including pavement saw cutting and demolition on Fairview Ave. N and Mercer St. in preparation for the weekend closure. In order to accommodate this work prior to noise-restricted hours, the following traffic restrictions will be implemented:

• Southbound Fairview Ave. N will be closed between Mercer St. and Republican St. from 7:30 p.m. to 6:00 a.m. on May 10 and from 7:30 p.m. to 11:00 p.m. on May 11. This closure will restrict southbound Fairview Ave. N access from the I-5 off-ramps at Mercer St. All traffic using the I-5 off-ramps at Mercer St. will be directed north via Valley St.

• Mercer St. will have two lanes closed between Terry Ave. N and Fairview Ave. N from 7:30 p.m. to 6:00 a.m. on May 10 and from 7:30 p.m. to 11:00 p.m. on May11. One lane of traffic will remain open.

Please note that all South Lake Union businesses will remain open and will be accessible via alternative routes.

Detour route maps are available to and from I-5:
Access to I-5
Access from I-5

Detour routes shown will be signed on roadways and may be heavily used, particularly Denny Way both eastbound and westbound.

During these closures, the I-5 on-ramp at University St. will be concurrently closed to provide more efficient traffic flow around the closed Mercer St. exit lane. Fairview Ave. N will also be closed between Mercer St. and Valley St. and Mercer St. will be closed to through traffic between Westlake Ave. N and Fairview Ave. N. All detour routes will be clearly marked.

Westbound Broad St. Closure between 9th Ave. N and Westlake Ave. N: May 2 – May 3

Westbound Broad St. between 9th Ave. N and Westlake Ave. N will be closed at night from May 2 – May 3. Night work will occur between 8:00 p.m. and 6:00 a.m. to accommodate underground communication line installations across Broad St.
Travelers heading west on Valley St. towards Seattle Center will be detoured north on Westlake Ave. N to 8th Ave. N and then south on 9th Ave. N to reconnect with westbound Broad St.

Read the full construction notice

Fairview Ave. N and Valley St. Lane Closures: April 30 – May 1
Fairview Ave. N and Valley St. will have nighttime lane closures from April 30 – May 1. One northbound turn lane from the Mercer St. off-ramps onto Fairview Ave. N will be closed during this time. Traffic turning left from Fairview Ave. N onto Valley St. will be restricted to one lane as crews complete underground water work on Valley St. at Boren Ave. N. One westbound lane and one eastbound lane will remain open on Valley St. Night work will occur between 8:00 p.m. and 6:00 a.m.

April 16 – 20 & 22: Fairview Ave. N Lane Closures

Fairview Ave. N will have a single southbound lane closed between Mercer St. and Republican St. beginning Monday, April 16 through Friday, April 20 and again on Sunday, April 22 to accommodate underground electrical work. This closure will also restrict the center left-turn lane on the Mercer St. off-ramps onto southbound Fairview Ave. N. Closure hours will be 7:00 p.m. to 6:00 a.m., weekdays and 24 hours per day on Sunday. One left-turn lane from the Mercer St. off-ramps onto southbound Fairview Ave. N will remain open at all times.

Tree Removal on Fairview Ave. N
During the March 30 – April 2 weekend closure, the existing trees along Fairview Ave. N between Mercer St. and Republican St. were permanently removed to accommodate the widening of Fairview Ave. N and construction of additional street improvements.

Unfortunately, the City cannot replant these specific trees in their original locations due to lack of space, however, the project does plan to plant two new trees within the project area for every tree removed, in accordance with City of Seattle standards. Additionally, over 10,000 new shrubs and other plants will ultimately be planted throughout the project area.

As the project moves through various stages of construction, the team will be continually looking for ways to minimize tree impacts. Overall, trees that do not need to be removed to accommodate roadway widening and improvements, and that are not at risk of damage or becoming a public safety hazard during construction, are being kept in place and will have tree protection placards posted on them to indicate their protected status.

• March 30 – April 2
• April 13 – April 16

Closure hours are scheduled for Fridays at 7:30 p.m. to Mondays at 5:00 a.m. Please note the I-5 on- and off-ramps at Mercer St. will remain open at all times.

During these closures, Fairview Ave. N will be fully closed to traffic between Mercer St. and Republican St. with additional lane restrictions between Mercer St. and Valley St. All traffic exiting I-5 at Mercer St. must turn right onto Fairview Ave. N and use Valley St. and:

• Use Broad St. to head west
• Use 9th Ave. N to access South Lake Union/downtown
• Use Fairview, Westlake or 9th avenues to head north

To access I-5 from south of Mercer St.:

• Use Republican St. to 9th Ave. N to Mercer St
• Eastbound traffic on Mercer St. will not be able to turn right or left onto Fairview Ave. N during weekend closures

Signs will be installed to warn drivers of traffic revisions. These closures will allow crews to install underground electrical utilities on Fairview Ave. N necessary in order to complete Stage 2 of the Mercer Corridor Project.

Additional Fairview Ave. N Restrictions Postponed Until Summer/Fall 2012
SDOT is postponing the previously announced restrictions on Fairview Ave. N due to current reduced street capacity as part of Stage 2 of Mercer East. In lieu of beginning full-time restrictions on Fairview Ave. N, the contractor will close Fairview Ave. N on select weekends to perform necessary Stage 2 work needed to open Mercer St. to two-way traffic later this summer or early fall. Once two-way Mercer St. is open to traffic, access to Mercer St. from the south via Westlake, Terry, and Boren avenues will be re-opened and the contractor will begin implementing severe Fairview Ave. N restrictions. Postponing this work will result in improved alternate routing options during construction along Fairview Ave. N.

Temporary closure of 8th Ave. N at Mercer St.
SDOT announces the closure of 8th Ave. N at the intersection of Mercer St. to accommodate curb, gutter, and sidewalk pavement replacement. The closure will be in effect 24 hours per day until the end of next week, February 17, weather permitting. Mercer St. lanes will remain open during this closure, but right turns from Mercer St. onto 8th Ave. N will not be permitted and right turns from 8th Ave. N onto Mercer St. will not be permitted.

Mercer Stage 2 traffic switch complete
Stage 2 of Mercer East has begun and eastbound traffic on Mercer St. has been re-routed onto the new Mercer St. lanes north of the existing lanes. Three lanes of traffic are continuing eastbound on Mercer St. with access to the I-5 on-ramps and southbound Fairview Ave. N. 

• The far-right lane of eastbound Mercer St. is right-turn only at Dexter Ave. N.
• Access to Mercer St. from the south via Boren, Terry, and Westlake Avenues is concurrently closed at Republican St. 
• Right turns from Mercer St. onto Fairview Ave. N southbound are allowed; however, alternate routes should be used to reach Eastlake Ave. E and Capitol Hill (i.e. Dexter Ave. N to Republican St.) due to increased congestion on Mercer St.
• Left turns from Mercer St. onto Fairview Ave. N northbound are not being permitted during Stage 2.

Access to Northbound I-5 and SR 99 Detour Map
Access to Southbound I-5 and SR 99 Detour Map
Pedestrian Detour Map
Bicycle Detour Map

Canceling January 6 – 9 weekend closure of the I-5 on- and off-ramps at Mercer St.
A full weekend closure is tentatively rescheduled for the following weekend in January:

• January 13 – January 16

Closure hours are expected to be from Friday at 11:00 p.m. to Monday at 5:00 a.m. Please note this full weekend closure is weather dependant and subject to cancelation.

January 6 - 9: Next weekend closure of the I-5 on- and off-ramps
The next confirmed weekend closure of the I-5 on- and off-ramps at Mercer St. will be:

• January 6 – January 9

Closure hours are expected to be from Friday at 11:00 p.m. to Monday at 5:00 a.m. Please note this full weekend closure is weather dependant and subject to cancelation.

Access from I-5 Detour Map
Access to I-5 Detour Map

During weekend closures, the I-5 on-ramp at University St. will be concurrently closed to provide more efficient traffic flow around the closed Mercer St. exit lane. Fairview Ave. N will also be closed between Mercer St. and Valley St. and Mercer St. will be closed to through traffic between Westlake Ave. N and Fairview Ave. N. All detour routes will be clearly marked to support traffic flow around the closures.

Travelers are encouraged to carpool and use alternate modes of transportation. Transit information can be found at:

• King County Metro at www.kingcounty.gov/metro, or by calling 206-553-3000
• Sound Transit at www.soundtransit.org
• Seattle Streetcar at http://www.seattlestreetcar.org/
• Community Transit at www.commtrans.org

Access to businesses will be maintained during construction.

Mercer St. Stage 2 traffic switch begins Monday, January 9
On January 9, Stage 2 of the Mercer East Project will begin and eastbound traffic on Mercer St. will be re-routed onto the new Mercer St. lanes north of the existing lanes. Three lanes of traffic will continue eastbound on Mercer St. with access to the I-5 on-ramps and Fairview Ave. N.  This traffic shift will result in access restrictions to Mercer St. from the south, as access to Mercer St. via Boren, Terry, and Westlake Avenues will be concurrently closed at Republican St.  Alternate routes should be used to reach Eastlake Ave. E and Capitol Hill (i.e. Dexter Ave. N to Republican St.).

Read the full construction notice.

Mercer St. lane closures December 3 – 4
SDOT is advising travelers of intermittent lane closures on Mercer St. the weekend of December 3 - 4. Up to two lanes of Mercer St. will be closed to traffic to accommodate the decommissioning of a gas line on Mercer St. at 8th Ave. N. Closure hours will be 9:00 a.m. to 5:00 p.m.

Overnight single-lane closures on southbound I-5 on-ramp at Mercer St. scheduled for November 14 and 15
SDOT’s Mercer Corridor Project is announcing overnight single-lane closures on the southbound I-5 on-ramp at Mercer St. on Monday, November 14, and Tuesday, November 15. Closure hours are expected to be 7:00 p.m. to 5:00 a.m. These overnight single-lane closures accommodate storm drainage work on the southbound on-ramp to I-5 in preparation for the future two-way Mercer St.

Nighttime lane closures on Mercer St.  beginning October 31:
SDOT is announcing intermittent lane closures on Mercer St. beginning as early as Monday, October 31. Up to two lanes of Mercer St. at Boren Ave. N, 9th Ave. N and Westlake Ave. N will be intermittently closed overnight to accommodate gas line crossings of Mercer St. Two lanes will remain open to traffic at all times. Night work will be from 7:00 p.m. to 5:00 a.m., intermittently over the next two weeks.

9th Ave. N re-opening to traffic; Westlake Ave. N closure scheduled to begin late October:

9th Ave. N reopening to traffic
9th Ave. N between Aloha St. and Republican St. 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 St. and Republican St.
• 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.

Please note the re-opened 9th Ave. N will be temporarily configured to one northbound lane and two southbound lanes while crews work to build the new Mercer St. lanes north of the existing lanes. In 2013, 9th Ave. N will be reconfigured into its permanent design, which includes a newly signalized intersection at 9th Ave. N and Westlake Ave. N.

Westlake Ave. N closed between Mercer St. and Valley St.
Westlake Ave. N between Mercer St. and Valley St. is tentatively scheduled to be closed to traffic beginning October 25 to allow underground utility installations and construction of new Mercer St. lanes crossing Westlake Ave. N. This closure allows crews to complete a “missing link” of the new Mercer St. roadway.

• Overnight on Monday, October 24, crews are scheduled to complete detour striping and temporary signal installation to accommodate implementing this closure. Please note this work is weather dependant.
• Traffic will be able to access businesses on Westlake Ave. N and right turns from northbound Westlake Ave. N onto Mercer St. will be permitted. This right turn lane will be signed for I-5 access only.
• Northbound Westlake Ave. N traffic from the city center will be detoured at Republican St. to 9th Ave. N. Southbound Westlake Ave. N traffic will also use 9th Ave. N.
• This configuration will be in place for several months while crews build new Mercer St. lanes across Westlake Ave. N.

• I-5 off-ramp to Mercer St: Right lane closure overnight on Tuesday, September 6, from 7:00 p.m. to 5:00 a.m.
• Westlake Ave. N lane shifts: One lane in each direction will be open between Aloha St. and 8th Ave. N as crews install underground electrical on the east side of the roadway. The west side of the adjacent parking lot will not be available for parking during this work.
• Roy St. west of 9th Ave. N: Night work continuing the week of September 6 between 7:00 p.m. and 6:00 a.m. followed by day work closing Roy St. beginning September 12.
• Roy St. east of Fairview Ave. N: Intermittent closures of this block of Roy St. to accommodate work near the I-5 off-ramp.
• Mercer St. lane closures near Terry Ave. N and Boren Ave. N: Up to three lanes closed overnight on Wednesday, September 7, from 7:00 p.m. to 5:00 a.m. to accommodate water main installation.

Upcoming construction activities in August, including night work on Mercer St. and Roy St. and ongoing 9th Ave. N roadwork

Beginning the week of August 22:

• Nighttime lane closures on Mercer St. at Westlake Ave. N, Terry Ave. N and Boren Ave. N

Beginning the week of August 29:

• Nighttime closure of Roy St. between 8th Ave. N and 9th Ave. N

Ongoing 9th Ave. N roadway restoration:

• Continued rebuilding and paving of 9th Ave. N between Aloha St. and Broad St. including tentatively scheduled night work the week of August 22.

Nighttime lane closures on Westlake Ave. N, Mercer St. and adjacent streets in early August
The Mercer Corridor Project is announcing temporary nighttime lane closures scheduled in early August, including:

• Beginning as early as Monday, August 1: Northbound Westlake Ave. N will be closed overnight between Mercer St. and Valley St. Northbound traffic, including King County Metro bus routes, will be detoured to Terry Ave. N from 7:00 p.m. to 5:00 a.m. for approximately one week. Southbound traffic will remain on Westlake Ave. N. For King County Metro bus information, please visit Metro Online at www.kingcounty.gov/metro and check the “Alerts Center.”
• Beginning as early as Monday, August 8: Nighttime lane closures will occur intermittently on Mercer St. at both Boren Ave. N and Terry Ave. N to accommodate water main installations lasting approximately three weeks. Up to three lanes of Mercer St. will be closed overnight, and Boren Ave. N and Terry Ave. N will have intermittent closures to through traffic between Republican St. and Mercer St. Work hours are expected to be 7:00 p.m. to 5:00 a.m.

July 22-25: Concurrent closure of Broad St. and I-5 on- and off-ramp closure at Mercer St.

While the Mercer St. on- and off-ramps are closed over the July 22 – 25 weekend, crews will take advantage of anticipated reduced traffic volumes on Broad St. to work in the intersection of Broad St. and 9th Ave. N for required storm drainage installations.

The closure will occur from Friday at 11:00 p.m. to Monday at 5:00 a.m. Crews may work up to 24-hours a day if required.

Travelers heading west on Valley St. toward Broad St. will be detoured to southbound Westlake Ave. N to Denny Way for access to the Seattle Center and downtown Seattle or northbound Westlake Ave. N to 8th Ave. N for access to lower Queen Anne and Dexter Ave. N.

Read the full construction notice.

Night work crossing Broad St. at 9th Ave. N

PSE crews will install gas utilities crossing Broad St. at 9th Ave. N beginning as early as July 5. Installation is expected to take one week and one lane of Broad St. will remain open accessing Roy St. and westbound Broad St.

Read the full construction notice.

9th Ave. N Construction Progress

Work to replace a nearly 100-year-old sewer line along 9th Ave. N between Aloha St. and Republican St. is now complete. The sewer bypass system at the intersection of 9th Ave. N and Aloha St. has been removed and the intersection of 9th Ave. N and Republican St. was re-opened to traffic in April.

What’s Next?

• Continued utility work: Installation of underground electrical and communications lines as well as storm drain, water, and gas lines on 9th Ave. N between Aloha St. and Broad St. Businesses will be converted to underground power and communications. Access to businesses will be maintained during construction.



• Complete roadway and sidewalk reconstruction on Westlake Ave. N north of Aloha St. and on 9th Ave. N between Aloha St. and Mercer St.: This work includes new roadway and sidewalks, new street lights, signage, and landscaping. 

Read the full construction notice outlining the scope and approximate time periods for construction activities on 9th Ave. N.

Work to replace a nearly 100-year-old sewer line along 9th Ave. N between Aloha St. and Republican St. is now complete. The sewer bypass system at the intersection of 9th Ave. N and Aloha St. has been removed and the intersection of 9th Ave. N and Republican St. is now open to traffic.

April 2011

Mercer Corridor Project: Upcoming full weekend closures of I-5 on- and off-ramps at Mercer Street scheduled for May
The Seattle Department of Transportation announces the upcoming confirmed weekend closures of the I-5 on- and off-ramps at Mercer Street. Full weekend closures will occur the following weekends:

• May 6 – May 9
• May 20 – May 23

Weekend closures will occur from Friday at 11:00 p.m. to Monday at 5:00 a.m. Read the press release

The I-5 on-ramp at University St. will be concurrently closed to provide more efficient traffic flow around the closed Mercer St. exit lane. Fairview Ave. N will also be closed between Mercer St. and Valley St. All detour routes will be clearly marked to support traffic flow around the closures.

A weekend closure is also tentatively scheduled for May 13 – May 16, pending final coordination with other major area projects.

Night Work on Mercer St. Near 9th Ave. N Will Continue Through April
Crews require additional nighttime lane closures on Mercer St. to complete underground utility work. Up to three lanes on Mercer St. will be closed overnight near the intersection of Mercer St. and 9th Ave. N. At least one lane will remain open. Weeknight work hours are from 7:00 p.m. to 5:00 a.m. through April, with intermittent single-lane closures in May if needed.

Open-Trench Sewer Installation and Roadway Rebuild on Westlake Ave. N North of Aloha St.
Crews will complete the remaining section of sewer line installation, followed by rebuilding a portion of Westlake between 8th Ave. N and Aloha St. Weekdays and weekend work, crews may work up to 24-hours a day if required for approximately six weeks.

Click here for 4/18/2011 Construction Notice

Detour Maps Now Available for the April 16th Weekend Closure of I-5 on- and off- ramps at Mercer Street
Detour maps are available for the previously announced weekend closures of the I-5 on- and off-ramps at Mercer Street as part of the Mercer Corridor Project.

Access from I-5 Detour Map
Access to I-5 Detour Map

First Weekend Closure of I-5 on- and off-ramps at Mercer St. Begins April 16
The Seattle Department of Transportation today announced the first full weekend closure of the I-5 on- and off-ramps at Mercer Street as part of the Mercer Corridor Project. The first closure is scheduled to begin at 1:00 a.m. on Saturday, April 16, through 1:00 a.m. on Monday, April 18.

During the closure of the I-5 on- and off-ramps at Mercer Street, SDOT and the Washington State Department of Transportation have determined that a concurrent closure of the I-5 on-ramp at University Street is necessary to improve safety and provide more efficient traffic flow around the closed Mercer Street exit lane. All detour routes will be clearly marked to support traffic flow around the closures. For this first weekend closure, times have been reduced from the anticipated standard hours of 11:00 p.m. on Friday to 5:00 a.m. on Monday in an effort to limit, as much as possible, the impact of this first closure. 

Read the full media release.

Upcoming Night Work at Mercer St. and 9th Ave. N
Nighttime work on Mercer St. and 9th Ave. N previously announced to begin as early as March 3 is now scheduled to begin on March 28 and will continue for up to three weeks.

Mercer St. will have up to three lanes closed overnight near the intersection of Mercer St. and 9th Ave. N. to accommodate the instillation of underground utilities across Mercer St. At least one lane will remain open to eastbound traffic on Mercer St. Night work hours are Monday-Friday, 7:00 p.m. to 5:00 a.m. for approximately three weeks.

March 2011

Upcoming Night Work at Mercer St. and 9th Ave. N
Mercer St. will have up to three lanes closed overnight near the intersection of Mercer St. and 9th Ave. N to accommodate the instillation of underground utilities across Mercer St. Eastbound traffic will be routed around the closure and will continue on Mercer St. Night work hours are weeknights, 7:00 p.m. to 5:00 a.m. for approximately two weeks.

Mercer St. to Republican St.: 9th Ave. N Sewer Installation Continues
Crews continue installing a new 30-inch diameter sewer line on 9th Ave. N. Nearby neighbors and businesses can expect:

• 9th Ave. N closed between Republican St. and Mercer St. during active work hours (local and emergency access allowed) and flaggers directing traffic as needed
• Access pits and heavy machinery
• Continued lane and sidewalk closures with appropriate traffic, bicycle and pedestrian detours
• Noise, dust, and vibration

Work Hours are weekdays and weekends and crews may work up to 24 hours per day if required. Work is anticipated to last six weeks.

Read the full construction notice outlining the scope and approximate time periods for construction activities on 9th Ave. N.

Adjacent Project Work: Dexter Ave. N. Paving Project
SDOT will begin repaving Dexter Ave. N between Fremont Ave. N and Roy St. on March 7, 2011. The project is being coordinated with the Mercer Corridor Project to consider joint traffic and detour impacts. For questions about the Dexter Ave. N Paving Project, please visit the project website at: www.seattle.gov/transportation/dexter_pave.htm or contact George Frost, Public Information Officer, at (206) 615-0786 or george.frost@seattle.gov.

Click here for 2/25/2011 Construction Notice

Updated Bicycle Routes, Pedestrian Access and Bus Stop Map
Please see the construction notice below for an updated map illustrating current bicycle routes, pedestrian access, and King County Metro bus stops in the project area. The following updates have been made since bicycle and pedestrian maps were distributed in November 2010:

• 9th Ave. N Sidewalk Closure
  To protect the safety of pedestrians and bicyclists, the east sidewalk of 9th Ave. N is now closed between Broad St. and Mercer St. Bicyclists and pedestrians are asked to use the west sidewalk of Westlake Ave. N to travel through this area.
• Terry Ave. N Closure
  Terry Ave. N is closed between Valley St. and Mercer St. to accommodate installation of upgraded utilities along the north side of Mercer St. and construction of new westbound Mercer St. lanes.
• King County Metro Temporary Bus Stops
  Temporary King County Metro bus stops are in use for the King County Metro Route 17 and Route 30, replacing bus stops that were closed during construction. For current transit information, please visit Metro Online at www.kingcounty.gov/metro and check the "Alerts Center."

Recommended Routes During Construction
While the eastbound Broad St. closure and 9th Ave. N lane restrictions are underway, the current construction notice shows maps of suggested routes based on current construction and traffic conditions.

Click Here for Detour Routes Construction Notice

The notice above includes maps of:

• Suggested bicycle routes
• Bus stop, sidewalk and crosswalk adjustments
• Routes for drivers from:
• Fremont to Eastlake
• Fremont to South Lake Union
• Capitol Hill to Queen Anne/Seattle Center
• Queen Anne/Seattle Center to I-5
• Queen Anne/Seattle Center to Eastlake

February 2011

Mercer St. to Republican St.: 9th Ave. N Sewer Installation Continues
Expect increased construction activity as crews continue installing a new 30-inch diameter sewer line on 9th Ave. N. Work Hours are weekdays and weekends and crews may work up to 24 hours per day if required.
Nearby neighbors and businesses can expect:

• 9th Ave. N closed between Republican St. and  Mercer St. during active work hours (local and emergency access allowed) and flaggers directing traffic as needed
• Access pits and heavy machinery
• Continued lane and sidewalk closures with appropriate traffic, bicycle and pedestrian detours
• Noise, dust, and vibration

Adjacent Project Work: Dexter Ave. N. Paving Project
SDOT will begin repaving Dexter Ave. N between Fremont Ave. N and Roy St. on March 7, 2011. The project is being coordinated with the Mercer Corridor Project to consider joint traffic and detour impacts. For questions about the Dexter Ave. N Paving Project, please visit the project website at: www.seattle.gov/transportation/dexter_pave.htm or contact George Frost, Public Information Officer, at (206) 615-0786 or george.frost@seattle.gov.

Aloha St. to Broad St.: 9th Ave. N Sewer Installation Continues
Expect increased construction activity to complete installation of a new 30-inch diameter sewer line. A temporary sewer bypass has been constructed to allow work on the existing sewer line. Nearby neighbors, businesses and travelers can expect:

• Flaggers directing traffic on 9th Ave. N between   Aloha St. and Broad St.
• Access pits and heavy machinery such as backhoes, front loaders and dump trucks
• Continued lane and sidewalk closures with appropriate traffic, bicycle and pedestrian detours
• Noise, dust, and vibration

Work Hours are weekdays and weekends and crews may work up to 24 hours per day if required. Work is anticipated to last two weeks.

Broad St. to Republican St.: Side Sewer Excavations
Excavation work will occur to connect side sewers to a temporary sewer bypass to support the mainline sewer replacement work. No interruption to sewer service is expected. Weekday work, 7:00 a.m. to 5:00 p.m. for approximately two weeks.

PSE Utility Work
Puget Sound Energy (PSE) is continuing independent utility work in the project area through the week of February 7. Questions about PSE work may be directed to Project Manager Tom Ling at 425-250-1544.

Read the full Construction Notice

January 2011

Upcoming Night Work
Night work will occur on Broad St. at 9th Ave. N for approximately one week. Westbound Broad St. will be reduced to one lane at the intersection of 9th Ave. N to accommodate the instillation of a temporary stormwater pipe needed for the sewer replacement. Westbound traffic will be routed around the closure and will continue on Broad St. Night work hours are typically between 7:00 p.m. and 6:00 a.m. Eastbound Broad St. remains closed to traffic between 5th Ave. N and 9th Ave. N.

Closure of Terry Ave. N from Valley St. to Mercer St.
As previously announced, Terry Ave. N will be closed between Valley St. and Mercer St. to accommodate installation of upgraded utilities along the north side of Mercer St. and construction of new westbound Mercer St. lanes. Closed to through traffic 24 hours a day, seven days a week, through 2011 as needed. The streetcar will continue to operate as usual on Terry Ave. N.

PSE Utility Work
Puget Sound Energy will be doing independent utility work in the project area including nighttime work crossing Mercer St. at Boren Ave. N and daytime work on Aloha St. between 8th Ave. N and 9th Ave. N. Questions about PSE work may be directed to Project Manager Tom Ling at 425-250-1544.Read the full Construction Notice.

Terry Ave. N Closure week of 1/10
As previously announced, intermittent work will continue on Terry Ave. N for the block between Valley St. and Mercer St. This section of Terry Ave. N will be intermittently closed during the day during the week of Monday, 1/10. Terry Ave. N is scheduled to be fully closed between Mercer St. and Valley St. later in January.

Upcoming Night Work Thursday, 1/6
Night work will occur on Broad St. near 9th Ave. N overnight on Thursday, 1/6. One westbound lane of Broad St. will be closed and traffic will be routed around the closure. Night work hours are typically between 7:00 p.m. and 6:00 a.m. Eastbound Broad St. remains closed to traffic between 5th Ave. N and 9th Ave. N.

Click here for 1/21/2011 Construction Notice

December 2010

Nighttime closures of Westlake Ave. N begin Monday 12/13
Night work is scheduled on Westlake Ave. N between Mercer St. and Valley St. on the following dates:

• Monday 12/13 – Thursday 12/16
• Monday 12/20 – Thursday 12/23 (if needed)

Northbound traffic on Westlake Ave. N will be closed at Mercer St. and detoured to Terry Ave. N. Southbound Westlake Ave. N will be open with one southbound traffic lane. These closures are necessary to accommodate utility work under the Seattle Streetcar tracks. Night work hours are 7:00 p.m. to 5:00 a.m.

Terry Ave. N closures week of 12/20
Terry Ave. N will be closed to traffic from Monday 12/20 – Thursday 12/23 to accommodate utility work. Note that Terry Ave. N will remain open during nighttime closures of Westlake Ave. N .

November 2010

Mercer Corridor Project night work, including Mercer St. lane closures beginning Monday, 11/15
Night work is scheduled to begin as early as Monday, 11/15, to accommodate the installation of a sewer bypass and dewatering system needed for the 9th Ave. N sewer replacement and associated roadway work.
Temporary, intermittent night work will occur in the following areas on weekdays between Monday, 11/15, and Tuesday, 11/23. Night work hours are typically between 7:00 p.m. and 6:00 a.m.

• Mercer St.: Nighttime closures of two to three lanes of Mercer St. between Dexter Ave. N and Westlake Ave. N.
• Westlake Ave. N: Nighttime restrictions of Westlake Ave. N to one lane in each direction in areas between Aloha St. and Mercer St.
• Valley St: Nighttime restrictions of Valley Ave. N to one lane in each direction between Terry Ave. N and Westlake Ave. N.
• Broad St.: Nighttime restrictions of westbound Broad St. to single lane near 9th Ave. N.
• Terry Ave. N: Nighttime closures of Terry Ave. N between Mercer St. and Valley St.

October 2010

9th Ave. N and eastbound Broad St. closures in place
Closures of eastbound Broad St. and of 9th Ave. N to through traffic began on Tuesday, October 12. Overnight on Monday, October 11, crews completed installation of temporary signals and detour striping to accommodate implementation of these closures.

September 2010

Traffic Alerts:
 9/24/2010 Construction Notice
 9/17/2010 Construction Notice
 9/15/2010 Construction Notice