Project updates: East Link Extension

Aug 15, 2018

I-90 floating bridge post-tensioning nearly complete

Sound Transit's contractor recently post-tensioned the I-90 floating bridge to prepare the bridge for East Link operation. Crews installed and stressed 1,080,000 feet of steel strand and applied 41,000 pounds of pressure, pulling the pontoons closer together and reinforcing the concrete. In the coming weeks, crews will continue to grout the ducts carrying the steel strands to protect them from corrosion and will begin removing equipment from the pontoons. Take a look at the photos below.

Steel reaction frames serve as the anchor points and absorb the force from the tensioned steel strands.

Steel reaction frames serve as the anchor points and absorb the force from the tensioned steel strands. Each of the 10 frames weighs approximately 17,500 lbs.

Ducts carry steel strands through each pontoon and connect to the steel anchor frames.

Ducts carry steel strands through each pontoon and connect to the steel anchor frames (left). A winch pulls the strands through the ducts, connecting the pontoons.

A close up view of steel strands waiting to be tensioned inside one of the pontoons.

A close up view of steel strands waiting to be tensioned inside one of the pontoons (left). Once the strands are stressed, the ducts will be grouted to hold the strands in place (right).

Aug 15, 2018

Weekday construction traffic impacts and Reminder of ongoing closures

Weekday construction traffic impacts: Monday, Aug. 20 – Friday, Aug. 24

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.: Daily closures of one southbound lane of 112th Avenue Southeast, between Main Street and Southeast 8th Street.

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 120 day closure
  • 112th Avenue Southeast bypass road construction
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Aug 8, 2018

148th Avenue Northeast nighttime road and ramp closure this week

View of 148th Avenue Northeast in Overlake.
Crews will close 148th Avenue Northeast at night to keep the public safe during overhead work.

Work over traffic

Starting at 10 p.m. Friday, Aug. 10 the contractor building the East Link light rail extension in the Overlake neighborhood will close 148th Avenue Northeast at SR 520 until 5 a.m. Saturday morning, Aug. 11. Crews will be performing work over the roadway.

Street closure schedule

Friday, Aug. 10 - 148th Avenue Northeast at SR 520 will be closed from 10 p.m. Friday to 5 a.m. Saturday.

The 148th Avenue Northeast closure is part of ongoing work that includes regular SR 520 on- and off- ramp closures. Drivers should follow the signed detour routes.

Map of 148th Avenue Northeast closures in Overlake.

Aug 8, 2018

Single lane closure 112th Avenue Northeast in downtown Bellevue, Weekday construction impacts and Reminder of ongoing closures

Single lane closure 112th Avenue Northeast in downtown Bellevue

Thursday, Friday and Monday, Aug. 9, 10 and 13

As needed, Sound Transit's contractor working in downtown Bellevue plans to close one southbound lane of 112th Avenue Northeast, between Northeast 6th and Northeast 4th between 9 a.m. and 4 p.m. Once scheduled, this work is expected to be completed in a single day. During the closure PSE crews will install an electrical service to support East Link construction in the area. Access to all local businesses and driveways will be maintained at all times.

Weekday construction traffic impacts: Monday, Aug. 13 – Friday, Aug. 17

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.: Daily closures of one southbound lane of 112th Avenue Southeast, between Main Street and Southeast 8th Street.

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 120 day closure
  • 112th Avenue Southeast bypass road construction *NEW*
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Aug 1, 2018

In this alert: Changes coming to 112th Ave SE, weekday construction traffic impacts, and reminder of ongoing closures

112th Ave SE temporary bypass road construction

Crews are preparing for the next phase of light rail construction on 112th Ave SE. Beginning next week, Sound Transit’s contractor will begin construction of the temporary bypass road near Bellefield Residential. When completed, the bypass road will carry traffic during construction of the road over rail undercrossing. Work to construct the bypass road is expected to last for approximately three months.

24 hours. During construction of the bypass road, 112th Ave SE will be reduced to one lane in each direction near SE 15th. People walking will continue to use the sidewalk on the east 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.

Map of 112th Ave SE temporary bypass August 2018

Weekday construction traffic impacts: Monday, Aug. 6 – Friday, Aug. 10

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 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.

112th Avenue Southeast

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

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
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Jul 31, 2018

Station construction continues on Mercer Island and upcoming I-90 ramp closures

View of the Mercer Island Station's 77th Avenue head house.
View of the Mercer Island Station's 77th Avenue head house.

Progress continues on the station's two head houses as steel supports have begun reaching for the sky. At the 77th Avenue head house, steel decking has been installed to prepare for concrete slab pours that will become the building's various levels. The 80th Avenue head house will begin to take shape as structural steel will begin to arrive on site.

To safely maneuver the steel around the construction site, crews will close the Island Crest Way HOV on- and off-ramps during off-peak hours, 9 a.m. to 3 p.m, during the following days and times:

Aug. 1 – 3, Eastbound Island Crest Way HOV off-ramp

Drivers can use the West Mercer Way and 77th Avenue eastbound off-ramps during these closures.

Aug. 13 - 31, Eastbound Island Crest Way HOV off-ramp and Westbound Island Crest Way HOV on-ramp

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 Island Crest Way eastbound HOV ramp closures.

Map of Island Crest Way eastbound and westbound ramp closures.

East Link construction begins Aug. 6 at Mercer Island Boat Launch

Beginning as early as Monday, Aug. 6, Sound Transit's contractor will begin mobilizing equipment and fencing at the Mercer Island Boat Launch. Crews will use approximately 14 parking spaces for staging and construction area as work continues to seismically retrofit the East Channel Bridge.

This will include excavating bridge pier footings, installing steel stiffeners to the bridge's box girders and wrapping the piers with fiber reinforced polymer. This work will reduce the structure's seismic vulnerability in a seismic event and prepare the East Channel Bridge for future East Link operation.
 
Approximately 14 spaces will be unavailable and access to remaining parking spaces and the boat launch will be maintained throughout construction. The parking area will be restored to existing conditions once work is complete.

Here's what you can expect:

  • Work hours will be Monday – Friday: 7 a.m. – 7 p.m.; Saturday: 9 a.m. – 6 p.m. Work is anticipated to last through November 2018. Crews may return at a later date to complete planting and landscaping.
  • Construction vehicles and crew members entering and exiting the work zone during typical work hours. Vehicles, pedestrians and cyclists should follow signed detours and flaggers to safely access your destination.
  • Construction fencing, construction trailers, lighting and signage delineating the construction site will be in place.
  • Suspended work decks will also be installed below the East Channel Bridge and will be visible from the boat launch area.
  • Approximately 14 parking spaces will be unavailable during this time. Remaining parking will be available throughout construction. The boat launch will continue to be accessible.
  • Potential intermittent noise and vibration from construction activities may be noticeable.

Plan ahead for Seafair Weekend

To prepare for Seafair Weekend, Sound Transit's contractor will halt work on the I-90 floating bridge during the Blue Angels' rehearsals and weekend performances. Both directions of I-90 will be closed between I-5 in Seattle and Island Crest Way on Mercer Island, during the following days and times:

  • Thursday, Aug. 2; 9:45 a.m. – 12:15 p.m.; 1 – 2:45 p.m. (practices)
  • Friday, Aug. 3; 12:55 – 2:45 p.m.
  • Saturday Aug. 4; 12:55 – 2:45 p.m.
  • Sunday Aug. 5; 12:55 – 2:45 p.m.
Jul 26, 2018

Reminder: I-90 westbound closed overnight this weekend

Aerial photo of I-90 westbound.

Westbound I-90 lanes will close at 11 p.m. Saturday, July 28 until 7 a.m. Sunday, July 29 and from 10:30 p.m. Sunday, July 29 until 4:30 a.m. Monday, July 30. Westbound I-90 will be closed between Island Crest Way on Mercer Island and I-5 in Seattle as crews post-tension the Homer Hadley floating bridge. Crews will begin closing ramps and lanes beginning at 8.pm. and will begin reopening lanes beginning at 7 a.m. on Sunday and 4:30 a.m. on Monday.

Please Note: Additional weeknight closures may be necessary to complete this work and have been approved for:

  • Monday July 30 – Thursday Aug. 2 (10:30 p.m. – 4:30 a.m., nightly)
  • Monday Aug. 6 – Thursday Aug. 9 (10:30 p.m. – 4:30 a.m., nightly)

If these closures are necessary, additional notice will be provided. Drivers should pay attention to ramp signage and overhead reader boards for more information.

Vehicles traveling westbound during the closures will exit the roadway at Island Crest Way. Drivers are encouraged to use alternate routes to cross Lake Washington during these closures. Emergency vehicles will continue to have access to westbound I-90 during these closures.

Here's what you can expect:

  • Westbound I-90 between Island Crest Way and I-5, will be closed beginning at 11 p.m. Saturday until 7 a.m. Sunday and from 10:30 p.m. Sunday until 4:30 a.m. Monday during the weekend of July 28 – July 30.
  • Westbound I-90 between Island Crest Way and I-5, may also close during weeknights, Monday July 30 – Thursday Aug. 2, and Monday Aug. 6 – Thursday Aug. 9, from 10:30 p.m. each night until 4:30 a.m. the following morning. Additional notice will be provided if these closures are necessary. Drivers should pay attention to ramp signage and overhead reader boards for more information.
  • Vehicles, lights, generators and work crews will be visible on the floating bridge.
  • ST 550 and 554 buses with service after 11 p.m., will terminate at the Mercer Island Park-and-Ride before returning to eastbound I-90. Buses will not serve the westbound Rainier Flyer Stop in Seattle after 11 p.m.
Jul 25, 2018

In this alert: Nighttime girder installation, weekday construction traffic impacts, and reminder of ongoing closures

Precast concrete girder installation

Girder installation is underway in south Bellevue. Starting last week, crews began installing pre-cast concrete girders. The current phase of girder installation is expected to be completed by the end of this week. Precast concrete girders, measuring 80-120 feet long and each weighing up to 205,000 pounds, will be trucked in and lifted into place using large mobile cranes. Once installed, the girders will serve as the foundation for much of East Link's aerial guideway and station in South Bellevue. Anticipated work hours will be 8 p.m. to 5 a.m. nightly.

Girder installation work area.

Girder installation work area.

Noise/light: Temporary light plants will be used to illuminate the work area. There will be noise from cranes, lifts, light plants and associated equipment while crews set concrete girders. Vehicles will utilize broadband backup alarms. Crane backup alarms are tonal, but they will be used infrequently.

Sound Transit's contractor is permitted to work expanded hours in the I-90 corridor and adjacent to Bellevue Way Southeast, including 24-hour work in this area. The allowable noise threshold is based on average construction noise produced over each one-hour period. There may be moments during an hour when construction noise exceeds the hourly average, but crews will take measures to stay below the average hourly threshold. Please contact East Link outreach with any feedback on nighttime noise. For after-hours issues that need immediate attention, Sound Transit maintains a 24-hour construction hotline.

For after-hours issues that need immediate attention, Sound Transit maintains a 24-hour construction hotline.

Anticipated girder installation schedule:

July 25-27: Wednesday-Thursday (Friday morning): South Bellevue Station site

Construction crewsuse cranes to place girders between columns.

Construction crews will use cranes to place girders between columns.

Weekday construction traffic impacts: Monday, July 30 – Friday, Aug. 3

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.: Daily closures of one northbound lane of 112th Avenue Southeast, between Bellevue Way Southeast and Main Street.

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

Monday-Friday 7 a.m. to 3 p.m.: As needed, in order to complete utility work and facilitate wall construction, Sound Transit's contractor may close one southbound lane of 112th Avenue Southeast, between Southeast 8th Street and Bellevue Way Southeast.

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 120 day closure
  • Closure of Southeast 15th at 112th Avenue Southeast
  • Winters House and Blueberry Farm Closure and new temporary lot
Jul 24, 2018

112th Avenue NE lane closures in downtown Bellevue

Drives should be aware of upcoming lane closures on 112th Avenue Northeast between Northeast 6th and Northeast 4th streets. In preparation for the elevated railway, one left northbound lane and one left southbound on 112th Avenue Northeast will be closed between Northeast 4th and Northeast 6th streets for two-day shifts to strip horizontal structures over 112th Avenue NE. 

What to expect?

  • Approved work hours are Tuesday and Wednesday, 9 a.m. – 3 p.m.  
  • The work is expected to take approximately two days to complete.
  • The crew will have noise control measures in place while the work is occurring.
  • Uniform Police Officers will be made available for motorists, pedestrians, and bicyclists.

 

Jul 20, 2018

Weekend closures on Northeast 6th Street in downtown Bellevue

Northeast 6th Street Bellevue closure map.

Beginning on Friday, July 20th, Sound Transit's contractor will fully close Northeast 6th Street between 110th and 112th Avenues Northeast. Our contractor will be replacing utilities underneath the roadway in preparation for the East Link light rail downtown Bellevue station near Bellevue City Hall. This work is anticipated to take four weekends to complete. Local access to Bravern and Meydenbauer Center parking garage access will remain open while construction is occurring.

What to expect:

  • Work is scheduled to occur Friday morning at 7 a.m. to Monday morning at 6 a.m.
  • This work is anticipated to take 4-5 weekends.
  • The sidewalk will be closed along the south side of Northeast 6th Street adjacent to the work area. The sidewalk along the north side of Northeast 6th Street will remain open while work is occurring.
  • Barriers and signage will prohibit vehicles and pedestrians from entering the work zone. Detour and signage will be in place.
  • Uniformed police officers will direct traffic as needed.
  • Access to Meydenbauer Center will be available for all upcoming events while work is occurring.

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