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Washington State Department of Transportation

Address 310 Maple Park Avenue SE, P.O. Box 47300, Olympia, WA, 98504-7300, US
Website www.wsdot.wa.gov

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Seattle TBM’s 2,000-Ton Front End Reconnected with Dramatic Crane Lift

Seattle Tunnel Partners (STP) has reconnected the SR 99 tunneling machine’s 2,000-ton front end to the section that remained in the access pit during repairs. With the two sections of the machine now bolted together, crews from Mammoet have unhooked the front-end piece from the massive red crane that performed last week’s lift.