WELCOME TO MERCER ISLAND CONSTRUCTION KICKOFF OPEN HOUSE EAST LINK EXTENSION
The purpose of tonight’s meeting is to: Agenda • Provide an overview of key project elements. • 5-7 p.m. Open House • Introduce the community to members of the • Meet with project staff and view construction team. display boards and graphics featuring information about construction • Present details on early construction activities. activities in Mercer Island. • 7 p.m. Meeting adjourns
07/12 LIGHT RAIL ALIGNMENT EAST LINK EXTENSION
Redmond Technology Center P 40th Length: 14 miles Ride times: Overlake • Mercer Island to 20 Spring District/ Village University of Washington: 120th P 20 minutes
Bel-Red/ 52nd Ave Wilburton • South Bellevue to Sea-Tac 130th ake th St Airport: 50 minutes Washington th St Bellevue • Overlake Transit Center to Downtown Bellevue Transit Center: East Main 10 minutes Main St Rider projection: About Intl District/ Judkins 50,000 riders will use East Chinatown Park Mercer Island Link every day by 2030 P ainier Ave S P South Bellevue Budget: $2.8 billion (2010 $) Start of service:
23rd Ave S Targeted 2023 th Ave S 0th Ave S
2006-2011 2011-2015 2015-2022 Targeted 2022 Targeted 2023
Planning and Construction Testing & East Link environmental Final design (we are here) pre-operations in service review
07/12 MERCER ISLAND SEGMENT OVERVIEW EAST LINK EXTENSION
Benefits: Seattle Map Key Station P Park ide 23rd Ave S ink in service ake • Provides access to high quality, Washington ake lvd Washington Tunnel route frequent transit service that levated route Surface and Intl District/ existing bridges operates 20 hours per day. Chinatown Mercer Judkins Park Island • Approximately 5,900 daily P S 2 th St Island Crest Way boardings (2035). 2nd Ave S th Ave S 0th Ave S
ainier Ave S • Increases travel options for Mercer Island residents and employees, consistent with Mercer Mercer Island transportation Island goals. • Improves regional air quality by displacing more than 2.5 greenhouse gas emissions when Travel times (from Mercer Island Station) riders leave their cars behind. • International District/Chinatown = 10 minutes • University of Washington = 20 minutes • Sea-Tac Airport = 44 minutes (with transfer at International District Station) • Bellevue Transit Center = 15 minutes 07/12 MERCER ISLAND COMMUNITY OUTREACH EAST LINK EXTENSION
Community Outreach’s mission is to represent Sound Transit’s interests in the community, and Contact us the community’s interests in Sound Transit. During tel: 206-398-5465 construction, it is our job to keep community members informed of major construction activities email: [email protected] and project progress. We are your point of contact web: soundtransit.org/eastlink for Sound Transit’s projects. 24-hour Construction Hotline: 1-888-298-2395 Good Neighbor Commitments: For issues that need immediate attention after normal business hours • Provide advanced notification of work activities. • Maintain business and residential access. • Maintain a clean work site. • Minimize noise, dust and debris. • Provide wayfinding and signage. • 24-hour construction hotline.
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
CONTEXTUAL PLAN
SITE PLAN
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
SITE CROSS SECTION AT EAST HEADHOUSE
SITE CROSS SECTION AT PLATFORM
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
EAST HEADHOUSE FACING WEST
EAST HEADHOUSE INTERIOR
EAST HEADHOUSE ELEVATION
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
WEST HEADHOUSE FACING EAST
WEST HEADHOUSE INTERIOR
WEST HEADHOUSE ELEVATION
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
STATION PLATFORM FACING EAST
PLATFORM CROSS SECTION
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
77TH AVE LANDSCAPING PLAN
PLANT MATERIALS
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
60TH AVENUE SUPPORT STRUCTURE SITE PLAN
60TH AVENUE SUPPORT STRUCTURE SECTION
07/12 MERCER ISLAND STATION – FINAL DESIGN EAST LINK EXTENSION
SHOREWOOD DRIVE SUPPORT STRUCTURE SITE PLAN & PLANTS
SHOREWOOD DRIVE SUPPORT STRUCTURE ELEVATION
07/12 EAST ENTRANCE ARTWORK BELIZ BROTHER
SECTION SLIDE THROUGH THE NORTH FACADE OF THE EAST ENTRANCE LOOKING WEST TOWARDS THE TRAIN PLATFORM
ABOUT THE ARTWORK ABOUT THE ARTIST Beliz Brother writes that her artwork Beliz Brother is an artist for the east entrance “is a quiet piece who not only highlights the of color and balance, referring to complexity of interchange reflections in both the sky and water.” and interaction, but also Located in the glass pavilion leading seeks to incorporate this very to the station platform, the sculpture process into the creation of will guide patrons in from the street, her work. Her work has been hover gently above them while moving exhibited at the Seattle Art up and down the stairs, and serve as Museum, San Francisco’s a marker, differentiating between the New Langton Arts and the east and the west entrances to the Henry Art Gallery in Seattle. station. Like its companion piece in Permanent installations of the west entrance, the sculpture will her sculpture can be seen be mounted to an axle, allowing for at Seattle City Hall, the Tech slight movements of the large disc-like Museum of Innovation in San forms, animating the space with both Jose, and Swedish Hospital shadows and reflections. and Harborview Medical Center in Seattle.
June 2017 WEST ENTRANCE ARTWORK BELIZ BROTHER
LOOKING EAST DOWN THE WEST ENTRANCE STAIRS AND ESCALATORS LOOKING WEST UP THE WEST ENTRANCE STAIRS AND ESCALATORS
ABOUT THE ARTWORK ABOUT THE ARTIST The artwork for the west entrance Beliz Brother is an artist who not only is a grouping of paddles and oars, highlights the complexity of inter- each designed and built by artist Beliz change and interaction, but also seeks Brother and gathered into a cluster to incorporate this very process into above the stairs and escalators lead- the creation of her work. ing to and from the station platform. Her work has been exhibited Based on paddles and oars used with at the Seattle Art Museum, native canoes, native and contem- the Philadelphia Institute porary kayaks, rowboats, skulls and of Contemporary Art, San paddleboards refer to the traditions Francisco’s New Langton Arts of transportation and recreation, both and the Henry Art Gallery in old and new, on the lake surrounding Seattle. Permanent installa- the island. Together they form an tions of her sculpture can be animated and colorful sculpture that seen at Seattle City Hall, the can be seen when entering from the Tech Museum of Innovation street, descending the stairs and from in San Jose, and Swedish the light rail trains. The materials will Hospital and Harborview be steel and fire proofed cedar wood. Medical Center in Seattle.
June 2017 5 40
90 118TH AVE SE AVE 118TH
5 118TH AVE SE 40
5 118TH AVE SE 118TH AVE SE 40
Nature Park
Mercer Slough
113TH AVE SE 07/17
King County 112TH AVE SE District Court BELLEVUE WAY SE Nature Park
Mercer Slough
Surrey
Downs Park
BELLEVUE WAY SE 112TH AVE SE AVE 112TH 90 108TH AVE SE 108TH AVE SE 108TH AVE SE
BELLEVUE WAY SE Enatai
Enatai Beach Park
Enatai
School
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104TH AVE SE
104TH AVE SE
Killarney
Glen Park 90
100TH AVE SE
98TH AVE SE
Park
Chism SE 36TH ST
Lake Washington GALLAGHER HILL RD HILL GALLAGHER Open Space Gallagher Hill SE 40TH ST 40TH SE 90 Park Luther Burbank
ISLAND CREST WAY
ISLAND CREST WAY
80TH AVE SE Steel dowels epoxy to formSteel dowels are added and covered in and newa connection between existing concrete installed.concrete. Over 5,000 steel dowels will be Stiffeners Longitudinal stiffeners are added to the box girders. SE 40TH ST 40TH SE
SE 28TH ST 28TH SE SE 30TH ST 30TH SE
78TH AVE SE ST 32ND SE 78TH AVE SE AVE 78TH
77TH AVE SE SE 27TH ST 27TH SE Similar steel jackets will be installed to the supports for the D2 roadway in Seattle. 5 Park 2 76TH AVE SE 76TH AVE SE Mercerdale Lake Washington 90 North Hillside W MERCER WAY Mercerdale
N MERCER WAY ST 24TH SE 72ND AVE SE Park Park Roanoke Aubry Davis
W MERCER WAY
W MERCER WAY 65TH AVE SE AVE 65TH Lid Park West I-90 1 EAST LINK EXTENSION EAST 90 I-90 Seismic Retrofit Seismic I-90 roughout the I-90 corridor. will occur throughout Seismic retrofits of specific work events. Examples 4 Lake Washington
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LAKESIDE AVE S AVE LAKESIDE LAKESIDE AVE S AVE LAKESIDE
LAKESIDE AVE S Park Baker LAKESIDE AVE S Beach Mount Steel jackets Steel jackets will be added to some existing columns and will be delivered by barge. The heaviest piece is 11,000 pounds. 90 Micropiles are installed to add additional anchoringMicropiles are installed to add additional Approach structure. support for the West Micropile installation Post-tensioning is a method to strengthen concrete Post-tensioning by adding steel strands to existing concrete. The steel strands are anchored to various points on the bridge. The steel strands are then jacked to very high stresses and then released. The end result is compressed and stronger concrete. Mount Clair Park Park Lake Colman Blvd Park Washington Mount Baker 2 School John Muir 31ST AVE S 31ST AVE S Elementary
31ST AVE S 3 4 31ST AVE S 31ST AVE S 1 Franklin High School RETROFIT LOCATIONS RETROFIT Park Powell
Barnett MARTIN LUTHER KING JR WAY S MARTIN LUTHER KING JR WAY S MARTIN LUTHER KING JR WAY S Park
MARTIN LUTHER KING JR WAY S King Jr Memorial
Park Martin Luther
Sam Smith
Elementary School Thurgood Marshall E YESLER WYE YESLER S JACKSON ST
90 Park
Garfield
High High School
23RD AVE S 23RD AVE S Jimi Hendrix olman
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Date: 6/28/2017 G:\REQUESTS\DECM\HaulRoutes\HaulMap1117.mxd Mercer Island Construction Timeline EAST LINK EXTENSION MARTIN LUTHER KING JR WAY S 1 1 23RD AVE S 2TH AVE E 4TH AVE E
0 112THSE AVE E YESLER WAY E YESLER WY 31ST AVE S
118TH AVE SE
108TH AVE SE 104TH AVE SE AVE 104TH 98TH AVE SE S JACKSON ST S JACKSON ST S JACKSON ST Lake Washington
LAKESIDE AVE S 1 2TH AVE S 123RD AVE SE
MARTIN LUTHER KING JR WAY S BELLEVUE WAY SE
Seattle AVELAKESIDE S 23RD AVE S
RAINIER AVE S 31ST AVE S 0 0
118TH AVE SE GOLF DR S BLOCKS 11, 12 N MERCER WAY 112TH AVE SE
72ND AVE SE Bellevue
AIRPORT WAY S 15TH AVE S Mercer Island Tunnel BLOCK 13 BELLEVUE WAY SE
100TH AVE SE 1 1 1 90 MARTIN LUTHER KING JR WAY S 4TH AVE S 2TH AVE S 7TH AVE7TH S
90 104TH AVE SE
90 108TH AVE SE W MERCER WAY MERCER W 31ST AVE S RAINIER AVE S Mercer Island Station 90 SE 24TH ST
AIRPORT WAY S AIRPORT
76TH AVE SE SE 25TH ST
118TH AVE SE 23RD AVE S 1 1 1 31ST AVE S SE 27TH ST 7TH AVE7TH S 4TH AVE S 5TH AVE S 80TH AVE SE 78TH AVE SE
BEACON AVE S LAKESIDE AVE S ISLAND CREST WAY 77TH AVE SE 108TH AVE SE 113TH AVE SE
65TH AVE SE BLOCK 14 S COLLEGE ST Mercer 90
BEACON AVE S SE 32ND ST I-90 East
23RD AVE S W MERCER WAY Is. 1 31ST AVE S
7TH AVE7TH S 90
6TH AVE S S LANDER ST 90 1 5TH AVE S ISLAND CREST WAY
AIRPORT WAY S SE 36TH ST 90
78TH AVE SE 118TH AVE SE E MERCER WAY MERCER E
W MERCER WAY
SE 40TH ST SE 40TH ST 124TH
GALLAGHER HILL RD
Impacts
07/17 Typical Light Rail Construction Sequence EAST LINK EXTENSION
East Link construction includes building at-grade, elevated, and tunnel light rail infrastructure
2016 2023 Construction begins Open for service
Install seismic retrofits Prepare the work zone Build station and supporting Install track and power Install and test systems infrastructure The I-90 roadway and floating bridge will be Crews must clear buildings and soil and prepare Sound Transit installs track and wire while placing Before light rail opens to passengers, Sound Transit seismically retrofitted to prepare the structures the work zone for East Link construction crews. This Next, Sound Transit lays the foundations necessary poles and ancillary structures that power the system completes a safety certification process testing for light rail operation. includes erecting barriers and fencing to keep the to run light rail track and builds stations and and operate the signals. communications, safety and emergency systems, as work zone safe. supporting infrastructure. well as signals and crossing gates.
July 2017 Crossing Lake Washington EAST LINK EXTENSION
Pioneering engineering As part of the East Link extension, Sound Transit will do something that’s never been done before—run light rail trains across a floating bridge. To do this, engineers and designers had to consider a number of factors, including six ranges of motion as trains travel onto the floating portion of the I-90 bridge. Here’s how we stepped up to the challenge.
What did we do? To accommodate running trains from the land bridge to the floating bridge, Sound Transit built two life-size test “track bridges.” The track bridges consist of rails that rest on a series of bearings and plates to let them move with the changing lake levels and bridge movements.
Passing the test Sound Transit shipped the test bridges and two light rail vehicles to the Transportation Technology Center (TTC) in Pueblo, Colorado, where freight and commuter rail agencies from around the country test new technologies. At the TTC, Sound Transit was able to mimic the forces and movements the track bridges will experience during normal and extreme conditions, including lake level, sway, roll and surge forces.
The results After collecting more than 500 channels of data during each light rail vehicle pass, the track bridges passed all critical test criteria with the ability to provide safe and comfortable light rail service at speeds up to 55 mph.
Learn more about the track bridge and watch a video soundtransit.org/trackbridge
07/17