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Project updates: East Link Extension

Oct 19, 2018

Mercer Island Station head house construction continues

As the summer construction season draws to a close, significant progress has been made at the Mercer Island station. For the last few months, crews have erected structural steel for both the east and west head houses. Recently, the last pieces of structural steel were installed for the west head house at 77th Avenue Southeast as the existing path and landscape have been removed to prepare for plaza construction. Steel for the east head house at 80th Avenue Southeast is nearing completion as well. The photos below give you a glimpse of recent construction progress.

West head house at 77th Avenue Southeast.

Steel installation has been completed at the west head house at 77th Avenue Southeast. Crews have begun painting the steel and will begin installing stairs, escalator, steel decking and glass walls in the coming months.

Area adjacent to the 77th Avenue Southeast entrance.

The area adjacent to the 77th Avenue Southeast entrance has been cleared to prepare for the new plaza and landscaping.

Structural steel installation at the 80th Avenue Southeast head house.

Structural steel installation at the 80th Avenue Southeast head house is nearing completion.

Supports and wooden form work for the stairs and escalator in the 77th Southeast head house.

In this photo, you can see the supports and wooden form work for the stairs and escalator in the 77th Southeast head house.

Looking ahead

This falls, crews will continue work at the station and will begin preparing to install rail. In the coming months, crews plan to:

  • Excavate and install the station platform.
  • Install utilities, concrete and landscaping for the 77th Avenue Southeast entrance plaza.
  • Complete installing steel for the 80th Avenue Southeast head house and pour the final sound walls.
  • Receive ballast for track, weld additional track and begin installation this winter.
Oct 18, 2018

In this alert: Weekday construction traffic impacts, Night work, and reminder of ongoing closures

Weekday construction traffic impacts: Monday, Oct. 22 – Friday, Oct. 26

I-90 Bike trail and 108th Avenue Southeast

Monday-Friday 7 a.m. to 6 p.m.: In order to install a storm drain line, crews will close one lane of 108th Avenue Southeast near Enatai Beach Park, Sound Transit's contractor will reduce 108th Avenue Southeast to one lane between Southeast 34th Street and Southeast Lake Road. Flaggers will be onsite actively directing traffic. During the closure, people on bikes will be asked to dismount and walk their bikes through the work area. People biking and driving should follow the direction of flaggers to safely reach their destination. During non-work hours, metal plates will cover the work area, but people biking and driving should proceed with caution.

This work is expected to last through early November.

I-90

Monday-Thursday (Friday morning) night closures, 8 p.m. to 5 a.m.: In order to safely construct East Link's aerial guideway in south Bellevue, Sound Transit's contractor plans to close the southbound I-405 to westbound I-90 HOV ramp and the I-90 westbound HOV lane between I-405 and the East Chanel Bridge.

Bellevue Way Southeast

In order to work in the eastside curb lane while maintaining two lanes of traffic in the peak direction (northbound 6-10 a.m. and southbound 2-6 p.m.) crews will use the 'southbound center lane' as a reversible traffic lane. At times, northbound vehicles will travel in what is normally a southbound lane.

Monday-Friday 6 a.m. to 6 p.m.: Work is set to begin on the light rail trench and guideway adjacent to Bellevue Way Southeast, between the South Bellevue Station site and the Wye at 112th Avenue Southeast. Throughout the project, two lanes will be maintained in the peak direction: northbound in the morning and southbound in the afternoon. Sound Transit's contractor will use cones and lane delineators to guide traffic along Bellevue Way Southeast. Please follow the direction of flaggers and signage to safely access your destination.

Friday, Oct. 19 and Tuesday, Oct. 23 10 a.m. to 2 p.m.: Occasional closures of two eastside lanes. One lane of traffic will be maintained in each direction.

More info on what to expect can be found at the East Link long-term and ongoing closures page.

112th Avenue Southeast

Monday-Friday 9 a.m. to 4 p.m.: As needed, daily closures of one southbound lane of 112th Avenue Southeast, between Main Street and Southeast 8th Street.

Night work near I-90 and 7 a.m. Saturday start time in south Bellevue

Work to construct the long span light rail track over I-90 continues. Typical work hours are Monday-Friday (Saturday morning) 8 p.m. to 7 a.m., occasional night work may also occur on Saturdays (Sunday Mornings). More information about long span construction can be found here.

As needed, crews will continue to start work at 7 a.m. along Bellevue Way and at the South Bellevue Station site.

Reminder of ongoing closures

For information on previously announced long-term and ongoing closures click here.

  • Bellevue Way Southeast reversible lane configuration
  • Sidewalk closures and detours on Bellevue Way Southeast and 112th Avenue Southeast
  • Bellevue Way Southeast to I-90 west HOV ramp long term closure
  • 112th Avenue Southeast bypass road
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Oct 16, 2018

Rainier Avenue closures cancelled for weekends of 10/19 and 10/26

This past weekend, crews completed demolition and removal of one of the I-90 westbound bridges, crossing Rainier Avenue S. The planned closures for the weekends of October 19-22 and 26-29 have been cancelled. Thank you for your patience as we completed this work!

View of the demolished bridge looking east

Rendering of the future station entrance on the eastern side of Rainier Avenue.

Upcoming Rainier Avenue lane and sidewalk closures
Now that bridge demolition has been completed, crews will begin utility work and lane restriping. This work may require intermittent lane and sidewalk closures on Rainier Ave. S at I-90. During this time, one sidewalk on Rainier Ave. S will remain open at all times between S. Charles St. and S. Massachusetts St.. The maps below describe general detour routes and detour signage will be in place to safely direct pedestrians to their destinations

Rainier Ave Eastern Sidewalk Closure

Rainier Ave western sidewalk closure

Oct 11, 2018

Night closures on I-405 in Bellevue on Oct 17th

Overnight drivers should be aware of upcoming closures on Interstate 405 in downtown Bellevue. On Wednesday, October 17th, Sound Transit’s contractor will concrete pour horizontal structures over the highway in preparation for elevated light rail. This work is weather dependent and may be rescheduled.

What to expect?
This night work is scheduled to occur from 10 p.m. to 5 a.m.

Crews will close the southbound I-405 HOV lane and one left lane from Northeast 10th Street to Main Street.

The northbound I-405 HOV lane and one left lane from Northeast 10th Street to Main Street will be closed.

The northbound I-405 off-ramp and the southbound on-ramp to and from Northeast 6th Street will be closed while work is occurring.

The eastbound Northeast 8th Street on-ramp to southbound I-405 will also be closed.

During the closures, drivers should follow the signed detour.

Image of road closure areas

Oct 11, 2018

In this alert: Weekend lane closure on Bellevue Way Southeast, Weekday construction traffic impacts, Night work, reminder of ongoing closures

Weekend lane closure on Bellevue Way Southeast

Saturday, October 13th, Sound Transit’s contractor will close the northbound curb lane of Bellevue Way SE. Anticipated closure hours are 7 a.m. to 6 p.m. The single lane closure is needed while crews haul off material during construction of the light rail trench along Bellevue Way SE. These closures are expected to continue through mid-November

Weekday construction traffic impacts: Monday, Oct. 8 – Friday, Oct. 12

I-90 Bike trail and 108th Avenue Southeast

Monday-Friday 7 a.m. to 6 p.m.: In order to install a storm drain line, crews will close one lane of 108th Avenue Southeast near Enatai Beach Park, Sound Transit's contractor will reduce 108th Avenue Southeast to one lane between Southeast 34th Street and Southeast Lake Road. Flaggers will be onsite actively directing traffic. During the closure, people on bikes will be asked to dismount and walk their bikes through the work area. People biking and driving should follow the direction of flaggers to safely reach their destination. During non-work hours, metal plates will cover the work area, but people biking and driving should proceed with caution.

This work is expected to last through early November

I-90

Monday-Thursday (Friday morning) night closures, 8 p.m. to 5 a.m.: In order to safely construct East Link's aerial guideway in south Bellevue, Sound Transit's contractor plans to close the southbound I-405 to westbound I-90 HOV ramp and the I-90 westbound HOV lane between I-405 and the East Chanel Bridge.

Bellevue Way Southeast

In order to work in the eastside curb lane while maintaining two lanes of traffic in the peak direction (northbound 6-10 a.m. and southbound 2-6 p.m.) crews will use the 'southbound center lane' as a reversible traffic lane. At times, northbound vehicles will travel in what is normally a southbound lane.

Monday-Friday 6 a.m. to 6 p.m.: Work is set to begin on the light rail trench and guideway adjacent to Bellevue Way Southeast, between the South Bellevue Station site and the Wye at 112th Avenue Southeast. Throughout the project, two lanes will be maintained in the peak direction: northbound in the morning and southbound in the afternoon. Sound Transit's contractor will use cones and lane delineators to guide traffic along Bellevue Way Southeast. Please follow the direction of flaggers and signage to safely access your destination.

More info on what to expect can be found at the East Link long-term and ongoing closures page.

112th Avenue Southeast

Monday-Friday 9 a.m. to 4 p.m. As needed, daily closures of one southbound lane of 112th Avenue Southeast, between Main Street and Southeast 8th Street.

Night work near I-90 and 7 a.m. start times at South Bellevue Station site continues

Work to construct the long span light rail track over I-90 continues. Typical work hours are Monday-Friday (Saturday morning) 10 p.m. to 7 a.m. More information about long span construction can be found here.

As needed, crews will continue to start work at 7 a.m. along Bellevue Way and at the South Bellevue Station site.

Reminder of ongoing closures

For information on previously announced long-term and ongoing closures click here.

  • Bellevue Way Southeast reversible lane configuration
  • Sidewalk closures and detours on Bellevue Way Southeast and 112th Avenue Southeast
  • Bellevue Way Southeast to I-90 west HOV ramp long term closure
  • 112th Avenue Southeast bypass road 
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Oct 10, 2018

Intersection improvements coming to 76th Avenue Southeast and North Mercer Way

Beginning as early as Monday Oct. 15, crews working for Sound Transit will begin making improvements at two areas near the Mercer Island Station: at the intersection of 76th Avenue Southeast and North Mercer Way and at the sidewalk adjacent to the Mercer Island Park-and-Ride.

At the intersection of 76th Avenue and North Mercer Way, crews will install a pedestrian activated crossing signal and new ADA accessible ramps.

Map of 76th Avenue Southeast and North Mercer Way.

Crews will also install pedestrian and cyclists improvements on the north side of Mercer Way, adjacent to the Park-and-Ride. These improvements are intended to reduce potential conflicts between pedestrians and cyclists. Crews will add pavement markings to delineate the sidewalk and path and will move and modify bus shelters to improve sight lines.

Mercer Island Park-and-Ride changes.

Here's what you can expect:

  • Work is planned to occur daily from 9 a.m. – 3 p.m. and is anticipated to last approximately two weeks.
  • Pavement sawcutting and minimal excavation will occur. Intermittent noise and dust may be noticeable.
  • Crews will close one bus shelter at a time during construction.
  • Vehicles and pedestrians will be detoured during this work as crews will work in the right of way. Please follow the direction of flaggers and signage to safely access your destination.

Ongoing I-90 ramp closures

As steel supports continue to be installed for the 80th Avenue Southeast head house, crews will continue to close both the east- and westbound Island Crest Way HOV on and off-ramps daily, during off-peak hours during Oct. These closures are necessary to continue erecting steel and completing the station's sound walls. Drivers can use the West Mercer Way and 76th Avenue Southeast westbound on-ramps and the West Mercer Way and 77th Avenue eastbound off-ramps during these closures.

Closures are planned to occur daily but may happen sporadically. Drivers should pay attention to signage and overhead reader boards for more information.

Map of Mercer Island I-90 HOV ramp closures in October 2018.

Oct 9, 2018

REMINDER: Rainier Avenue at I-90 closed this weekend, Oct. 12 -15

Crews will close Rainier Avenue at I-90 this weekend, beginning at 11 p.m. Friday, Oct. 12 until 5 a.m. Monday Oct. 15. During this time, crews will demolish one of the westbound I-90 bridges to make room for the future entrances to the Judkins Park Station. More information about detours and bus reroutes can be found here.

To complete this work, additional weekend closures have been scheduled for the weekends of Oct. 19-22 and 26-29. Please note, these additional closures may not be necessary and an updated notice will be provided.

What to expect:

  • Work will occur from 11 p.m. Friday – 5 a.m. Monday, during the weekends of Oct. 12-15, Oct. 19-22 and Oct. 26 – 29. Please note: not all closures may be necessary.
  • Intermittent noise and vibration may be noticeable as crews demolish and remove a portion of the I-90 roadway. This work is unavoidably noisy and crews will use best management practices to mitigate noise to the greatest extent possible.
  • Rainier Avenue South will be closed at I-90. The westbound I-90 off-ramp to Rainier Avenue South will be closed. All other ramps will remain open.
  • Traffic will be detoured to 23rd Avenue South (northbound direction only) and Martin Luther King Jr. Way South.
  • Sidewalks in this area will also be closed and pedestrians and cyclists will be detoured to surrounding streets. Please follow the direction of flaggers and signage to safely reach your destination during these closures.
  • Metro bus routes 7 and 106 will be detoured during these closures to Martin Luther King Jr. Way South. Bus stops on Rainier Avenue South between South Jackson Street and South Massachusetts Street will not be served by routes 7 or 106 during the closures. Bus stops at Rainier Avenue South and South Charles Street (to enter and exit I-90) will remain open and serviced by ST Express 554. More information about detours can be found here.

Judkins Park - Rainier Avenue closure detours map.

Oct 3, 2018

In this alert: Weekend single lane closure on Bellevue Way Southeast, Weekday construction traffic impacts, Night work, reminder of ongoing closures

Weekend single lane closure on Bellevue Way Southeast

Saturday 7 a.m. to 6 p.m. Sound Transit's contractor plans to close one northbound lane of Bellevue Way Southeast, from the South Bellevue Station site north to the Wye at 112th Avenue Southeast.

Weekday construction traffic impacts: Monday, Oct. 8 – Friday, Oct. 12

I-90 Bike trail and 108th Avenue Southeast

Monday-Friday 7 a.m. to 6 p.m.: In order to install a storm drain line, crews will close one lane of 108th Avenue Southeast near Enatai Beach Park, Sound Transit's contractor will reduce 108th Avenue Southeast to one lane between Southeast 34th Street and Southeast Lake Road. Flaggers will be onsite actively directing traffic. During the closure, people on bikes will be asked to dismount and walk their bikes through the work area. People biking and driving should follow the direction of flaggers to safely reach their destination. During non-work hours, metal plates will cover the work area, but people biking and driving should proceed with caution.

This work is expected to last approximately four weeks.

I-90

Monday-Thursday (Friday morning) night closures, 8 p.m. to 5 a.m.: In order to safely construct East Link's aerial guideway in south Bellevue, Sound Transit's contractor plans to close the southbound I-405 to westbound I-90 HOV ramp and the I-90 westbound HOV lane between I-405 and the East Chanel Bridge.

Bellevue Way Southeast

In order to work in the eastside curb lane while maintaining two lanes of traffic in the peak direction (northbound 6-10 a.m. and southbound 2-6 p.m.) crews will use the 'southbound center lane' as a reversible traffic lane. At times, northbound vehicles will travel in what is normally a southbound lane.

Monday-Friday 6 a.m. to 6 p.m.: Work is set to begin on the light rail trench and guideway adjacent to Bellevue Way Southeast, between the South Bellevue Station site and the Wye at 112th Avenue Southeast. Throughout the project, two lanes will be maintained in the peak direction: northbound in the morning and southbound in the afternoon. Sound Transit's contractor will use cones and lane delineators to guide traffic along Bellevue Way Southeast. Please follow the direction of flaggers and signage to safely access your destination.

Tuesday-Friday 10 a.m. to 2 p.m.: Occasional closures of two eastside lanes. One lane of traffic will be maintained in each direction.

More info on what to expect can be found at the East Link long-term and ongoing closures page.

112th Avenue Southeast

Monday-Friday 9 a.m. to 4 p.m. As needed, daily closures of one southbound lane of 112th Avenue Southeast, between Main Street and Southeast 8th Street.

Night work near I-90

Work to construct the long span light rail track over I-90 continues. Typical work hours are Monday-Friday (Saturday morning) 10 p.m. to 7 a.m. More information about long span construction can be found here.

Reminder of ongoing closures

For information on previously announced long-term and ongoing closures click here.

  • Bellevue Way Southeast reversible lane configuration
  • Sidewalk closures and detours on Bellevue Way Southeast and 112th Avenue Southeast
  • Bellevue Way Southeast to I-90 west HOV ramp long term closure
  • 112th Avenue Southeast bypass road (new)
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Sep 28, 2018

Rainier Avenue at I-90 closed for up to three weekends in October

Now that the Rainier Freeway stop has closed, construction of the Judkins Park Station will increase this fall. To construct the station entrances at Rainier Avenue, crews will begin demolishing a portion of the westbound I-90 lanes above Rainier Avenue. The existing pedestrian bridge will remain and will connect the future station entrances on the east and west side of Rainier Avenue.

To complete this demolition, crews will close Rainier Avenue South at I-90 and the westbound I-90 to southbound I-90 off-ramp, for up to three weekends in October. These closures are expected to take place:

  • Oct. 12 – 15 (Friday 11 p.m. - Monday 5 a.m.)
  • Oct. 19 – 22 (Friday 11 p.m. - Monday 5 a.m.)
  • Oct. 26 – 29 (Friday 11 p.m. - Monday 5 a.m.)

Map of October detours for Judkin's Park station construction.

Detours

Vehicular traffic will be detoured to 23rd Avenue South (northbound direction only) and to Martin Luther King Way South. Local access will be maintained for Rainier Avenue businesses.

Buses will be detoured around the closure:

  • Northbound: Buses will detour to Martin Luther King Jr. Way South at South Massachusetts Street before turning left on South Jackson Street to Rainier Avenue South and to continue their normal service. All stops on the reroute will be serviced.
  • Southbound: Buses will continue east on South Jackson St. before turning right on Martin Luther King Jr. Way South. Buses will then turn right on South Massachusetts Street and left onto Rainier Avenue South to continue their normal service. All stops on the reroute will be serviced.
  • Bus stops on Rainier Avenue South between South Jackson Street and South Massachusetts Street will not be served by routes 7 or 106 during the closures. Bus stops at Rainier Avenue South and South Charles Street (to enter and exit I-90) will remain open and serviced by ST Express 554.

More information about detours and bus service can be found in this flyer.

What to expect:

  • Work will occur from 11 p.m. Friday – 4 a.m. Monday, during the weekends of Oct. 12-15, Oct. 19-22 and Oct. 26 – 29. Please note: not all closures may be necessary and notice will provided of schedule changes.
  • Intermittent noise and vibration may be noticeable as crews demolish and remove a portion of the I-90 roadway. This work is unavoidably noisy and crews will use best management practices to mitigate noise to the greatest extent possible.
  • Rainier Avenue South will be closed at I-90. The westbound I-90 off-ramp to Rainier Avenue South will be closed. All other ramps will remain open. Sidewalks in this area will also be closed.
  • Vehicle traffic will be detoured to adjacent streets. Traffic will be detoured to 23rd Avenue South (northbound direction only) and Martin Luther King Jr. Way South.
  • Metro bus routes 7 and 106 will be detoured during these closures to Martin Luther King Jr. Way South. Bus stops on Rainier Avenue South, between South Jackson Street and South Massachusetts Street, will not be served by routes 7 or 106 during the closures. Bus stops at Rainier Avenue South and South Charles Street (to enter and exit I-90) will remain open and serviced by ST Express 554.
Sep 26, 2018

In this alert: Weekend Closure 112th Ave SE, Weekday construction traffic impacts, Night work, and reminder of ongoing closures.

Weekend of September 29-30: Full closure of 112th Avenue Southeast between Bellevue Way Southeast and Southeast 8th Street

In order to pave and stripe the soon-to-open 112th Ave SE temporary bypass road, and to safely remove trees adjacent to 112th Avenue Southeast, Sound Transit's contractor is planning a weekend closure of 112th Avenue Southeast between Bellevue Way Southeast and Southeast 8th.

Anticipated closure dates:

  • Saturday, September 29th from 7 a.m. until 8 p.m. Sunday, September 30th.

Local access to Bellefield Residential Park will be maintained. Flaggers and uniformed police officers will actively assist with traffic control and driveway access. Please follow the direction of flaggers and signage to safely access your destination. When 112th Ave SE reopens on Sunday evening, traffic will be diverted to a newly constructed bypass road located slightly west of the existing roadway. For more information about the bypass road, please read below in “weekday construction traffic impacts” section.

Map of 112th Ave SE closure area weekend of Septemer 29-30

Weekday Construction traffic impacts: Monday, October 1 – Friday, October 5

112th Ave SE

112th Ave SE bypass road scheduled to open September 30th

Crews are preparing for the next phase of light rail construction on 112th Ave SE. Beginning Sunday, September 30th, Sound Transit’s contractor will shift traffic to a temporary bypass road located to the west of the existing roadway. This shift is necessary in order for the contractor to begin construction of the road over rail undercrossing. Work to construct the first section of the undercrossing is expected to last approximately fourteen months.

24 hours. During construction of the undercrossing, 112th Ave SE will be reduced to one lane in each direction between SE 15th and SE 8th. People walking will use a sidewalk/pedestrian path on the west side of 112th Ave SE. The map below, details what people walking, driving and riding bikes can expect. Please follow the direction of flaggers and signage to safely access your destination.

Image of 112th Ave SE lane closures September 2018

Monday-Friday 9 a.m. to 4 p.m.: As needed, daily closures of one southbound lane of 112th Avenue SE, between Main Street and SE 8th Street.

I-90

Monday-Thursday (Friday morning) night closures, 8 p.m. to 5 a.m.: In order to safely construct East Link’s aerial guideway in south Bellevue, Sound Transit’s contractor plans to close the southbound I-405 to westbound I-90 HOV ramp and the I-90 westbound HOV lane between I-405 and the East Chanel Bridge.

Monday-Tuesday (Wednesday morning) night closures, 8 p.m. to 5 a.m.: of the I-90 to northbound I-405 HOV ramp

Bellevue Way SE

In order to work in the eastside curb lane while maintaining two lanes of traffic in the peak direction (northbound 6-10 a.m. and southbound 2-6 p.m.) crews will use the ‘southbound center lane’ as a reversible traffic lane. At times, northbound vehicles will travel in what is normally a southbound lane.

Monday-Friday 6 a.m. to 6 p.m.: Work is set to begin on the light rail trench and guideway adjacent to Bellevue Way SE, between the South Bellevue Station site and the Wye at 112th Avenue SE. Throughout the project, two lanes will be maintained in the peak direction: northbound in the morning and southbound in the afternoon. Sound Transit’s contractor will use cones and lane delineators to guide traffic along Bellevue Way SE. Please follow the direction of flaggers and signage to safely access your destination. More info on what to expect can be found at the East Link long-term and ongoing closures click page.

Night work near I-90 and 7 a.m. start times at South Bellevue Station site continues

Work to construct the long span light rail track over I-90 continues. Typical work hours are Monday-Friday (Saturday morning) 10 p.m. to 7 a.m. More information about long span construction can be found here.

Reminder of ongoing closures

For information on previously announced long-term and ongoing closures click here.

  • Bellevue Way SE reversible lane configuration
  • Sidewalk closures and detours on Bellevue Way SE and 112th Ave SE
  • Bellevue Way SE to I-90 west HOV ramp long term closure
  • Closure of SE 15th at 112th Ave SE
  • Winters House and Blueberry Farm Closure and new temporary lot

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