tunnel boring machine seattle

  • Gizmag goes inside the world's largest tunnel boring machine

    On Saturday,the world's largest tunnel boring machine was dedicated in the city of Seattle. "Bertha," as it's known, will spend the next 14 months boring a 1.7 mile (2.7 km) tunnel under the city to replace a viaduct damaged in a 2001 earthquake.

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  • Seattle tunnel machine begins drilling after 2-year break ...

    Jan 06, 2016 · Seattle's tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level along the city's waterfront.

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  • tunnel boring machine seattle - danceemporium.org

    Tunnel boring machine - Wikipedia. A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.

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  • The World's Largest Tunnel-Boring Machine Must Be Saved

    The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, leaving the city's planned waterfront renaissance hanging in the balance.

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  • Mobotix in Seattle Tunnel Boring Machine - Radius Vision

    Mobotix Cams for Tunnel Boring Machine Project Nearly everyone in the Pacific Northwest has heard of Big Bertha – the giant tunnel-digging machine that became stuck under the streets of

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  • Under Seattle, a Big Object Blocks Bertha. What Is It? - The ...

    Dec 19, 2013 · In October, workers walked through the first rings of the highway tunnel being built under Seattle's waterfront toward the boring machine called Bertha.

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  • Seattle's big tunnel project reaches a milestone, but it's ...

    Seattle's big tunnel project ... a stretch of Highway 99 that runs through north Seattle not far from the tunnel's ... 326-feet-long tunnel boring machine, ...

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  • Seattle's tunnel boring machine Bertha reaches end of long ...

    Apr 03, 2017 · Bertha, the machine digging a 1.75 mile tunnel under Seattle to replace a waterfront bridge with an underground roadway, had just 30 feet of mining left at the beginning of the day Tuesday.

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  • Bertha breaks through: Tunnel boring machine completes 4-year ...

    The world's largest tunnel boring machine, dubbed Bertha, finished its $2.1 billion, four-year journey drilling a 1.75-mile path under Seattle when it broke through to daylight on Tuesday, according to The Seattle Times. The remainder of the nearly $3.2 billion Alaskan Way Viaduct replacement ...

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  • The world's biggest boring machine Bertha is taken out for ...

    Contractors building a highway tunnel under Seattle are preparing to remove the world's largest boring machine so that it can be repaired. The gigantic drill, known as Bertha, stopped working in December 2013 after digging just 1,000ft of its two-mile journey to replace the aging Alaska Way, which ...

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  • Bertha (tunnel boring machine) - Wikipedia

    Bertha was a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle.

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  • Seattle Tunnel - Curbed Seattle

    Bertha hits it's deepest point underneath Seattle. The tunnel boring machine is now 60 percent done with her journey. ... The Seattle tunnel is finished (no, ...

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  • This is how a tunnel boring machine will burrow a viaduct ...

    So it's not exactly automotive, but it is a fascinating vehicle – and you'll excuse us if we don't make any puns about how boring it actually is. A portion of Seattle's Alaskan Way Viaduct is being replaced by a deep tunnel, and the machine purpose-built for the job is the world's largest tunnel ...

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  • Seattle viaduct demolition: When it will happen and what to ...

    With Bertha the tunnel-boring machine's job complete, the Alaskan Way Viaduct replacement tunnel's construction is well underway. This means that the viaduct's days are officially numbered. The Washington State Department of Transportation (WSDOT) is in the process of putting together the plan ...

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  • World's biggest tunnel machine Bertha emerges from ... - Autoblog

    Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.

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  • Alaskan Way Viaduct replacement tunnel - Wikipedia

    The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is ... the tunnel boring machine broke through to the ... Seattle Tunnel Partners are ...

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  • Bertha tunnel boring in Seattle is now 25% complete, state ...

    May 30, 2016 · SEATTLE -- The Washington State Department of Transportation said that, as of Tuesday, the Bertha tunnel boring in Seattle is now 25 percent complete. "As of May 31, Seattle Tunnel Partners crews have tunneled a total of 2,314 feet.

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  • Seattle Tunnel Boring Machine -- Bertha Rescue

    Why Seattle's Huge Tunnel-Boring Machine Is Still Stuck A year after Bertha got stuck, plans to free the big machine have stalled. And there's another problem.

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  • Tunnel Boring Machine Seattle - Image Results

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  • Seattle's unbelievable transportation megaproject fustercluck ...

    The tunnel-boring machine gets stuck . 2. ... which means WSDOT Seattle Tunnel Partners has to dig a 120-foot hole to reach the machine.

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  • Hard grind: The epic journey of the world's biggest tunnel ...

    On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger was tasked with the challenge of building a tunnel large enough to carry four lanes of motor traffic under the heart of Seattle. The story of how ...

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  • How did we get here? A look back on Seattle's tunnel machine ...

    Bertha's end could be near. The world's largest tunnel-boring machine is on schedule to break into daylight this spring after a tumultuous dig under downtown Seattle that's years behind schedule. The massive drill is part of the state Department of Transportation's multibillion-dollar ...

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  • Bertha | The Seattle Times

    Read more about the technical challenges and rising costs of the Highway 99 tunnel project, and the successes and travails of Bertha, the biggest-ever boring machine.

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  • Seattle tunnel, among world's biggest, takes step toward ...

    Apr 03, 2017 · Bertha, one of the world's largest tunnel boring machines, emerged north of downtown Seattle on Tuesday.

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  • Alaskan Way Viaduct - Follow Bertha

    The SR 99 tunneling machine, nicknamed Bertha, ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel ...

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