Alaskan Way Viaduct Replacement Program

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From: Alaskan Way Viaduct <wsdot@service.govdelivery.com>
Date: Feb 2, 2015 8:04 PM
Subject: Alaskan Way Viaduct Replacement Program
To: guyperea@live.com
Cc:
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> > View Online Version
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> > This program is led by the Washington State Department of Transportation in partnership with the Federal Highway Administration, King County, City of Seattle and the Port of Seattle.
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> > Alaskan Way Viaduct Replacement Program News
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> > Feb. 2, 2015
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> >  In this issue: 
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> > Access pit excavation complete
> > Milepost 31 Speaker Series – Bertha and Progress on the SR 99 Tunnel Project
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> > Access pit excavation complete
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> > Seattle Tunnel Partners has completed excavation of the 120-foot-deep pit that will be used to access and repair Bertha, the SR 99 tunneling machine. Crews removed the final scoop of soil from the pit on Friday, Jan. 30. Approximately 20,000 cubic yards of material was removed from the ground over the course of excavation, which began in mid-October. 
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> > With excavation complete, crews can begin construction of the concrete cradle at the bottom of the pit. The cradle will support the machine after it moves through the pit's southern wall, which is about 20 feet thick. 
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> > STP plans to tunnel through the concrete wall. The length of time it takes Bertha to reach the pit will depend largely on her ability to mine through and digest the concrete. If she's unable to mine through the wall, STP will create an opening from within the pit to give her an unobstructed path forward. Once inside the pit, crews will use a massive red gantry crane to hoist the front end of the machine to the surface for repairs. This narrated video explains the repair process in detail. You can also watch raw video of pit excavation on YouTube.  
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> > Milepost 31 Speaker Series – Bertha and Progress on the SR 99 Tunnel
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> > The new year is off to a busy start as we continue our work to replace the Alaskan Way Viaduct. Join us this Thursday at Milepost 31 as we give an update on Seattle Tunnel Partners' efforts to repair Bertha, the SR 99 tunneling machine. We'll give a preview of what's coming up as STP prepares to lift the front end of the tunneling machine to the surface for repairs.
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> > 6 – 6:30 p.m.
> > Thursday, Feb. 5
> > Milepost 31, 211 First Ave. S., Seattle
> > Admission is free
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> > Alaskan Way Viaduct Replacement Program
> >  Web: www.alaskanwayviaduct.org
> > Email: viaduct@wsdot.wa.gov  
> >  Phone: 1-888-AWV-LINE
> >  Twitter: @BerthaDigsSR99
> >
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