big bertha tunneling machine

    Follow Bertha's breakthrough - The WSDOT Blog

    The tunneling machine Bertha will mine through the five-foot-thick concrete wall of the disassembly pit, ... Below is footage of Bertha's breakthrough, ...

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    Bertha's big breakthrough is here: Seattle tunnel machine ...

    After mining through more than 9,000 feet of Seattle underground, and rebounding from a lengthy breakdown and repair, Bertha the tunneling machine is poised to bust through its final obstacle on Tuesday.

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

    You put your head down and you think big, ... The biggest tunnel-boring machine ever to get stuck under Seattle. ... Bertha will be tunneling again by early March.

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    The end is near for Bertha: After nearly 2 miles in 4 years ...

    Bertha is on pace to emerge into daylight in a few days and push its way into a pit in South Lake Union, where the one-time world's biggest tunneling machine will be cut apart and trucked away.

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    Alaskan Way Viaduct - Follow Bertha

    Follow Bertha Thank you for following Bertha. The SR 99 tunneling machine, nicknamed Bertha, has completed her work. For the latest tunnel progress, visit our new tracker page.

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    Big Bertha Tunneling Machine - Image Results

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    'Mystery object' that stopped $80m drilling machine for weeks ...

    An unknown object that stopped the world's most powerful tunnel boring machine ... It made the world's largest boring machine, 'Bertha ... from the movie Big ...

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

    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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    Bertha breaks into repair vault | The Today File | Seattle Times

    Update 4:15 p.m.: Tunnel-boring machine Bertha's cutterhead is within about three feet of drilling all the way to open air, which ought to happen this evening.

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    Big Bertha -- world's largest tunnel boring machine -- facing ...

    Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blacksto...

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    Big Bertha, world's largest tunnel-boring machine, arrives in ...

    The "Big" in Bertha's name isn't there for the catchiness. It's there because it's apt. With a 57-foot diameter and a length of a football field, Big Bertha is the world's largest tunnel-boring machine. She's quite hefty too. Bertha is assembled from 41 parts, the largest of which ...

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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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    Bertha breaks through: World's largest boring machine ...

    The normally sedate city of Seattle sounded more like the set of a science fiction epic today as the world's largest boring machine roared and screeched its way into the open air. The tunnel boring machine, better known as "Bertha" cut through a wall of reinforced concrete in the shadow of the city ...

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    Seattle's Big Bertha Tunneling Machine ... - popularmechanics.com

    After three years and millions of dollars in repairs, the SR99 tunneling machine in Seattle has resumed operations.

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    Big Bertha – world's largest tunnel boring machine – facing ...

    Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blackstone reports on what the high-tech machinery can do, as well as its latest challenge digging in the depths of Seattle.

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    Bertha Finally Breaks Through In Seattle : The Two-Way : NPR

    Bertha Finally Breaks Through In ... a 2,000-ton section of the tunnel boring machine known as "Bertha" in ... mayor — the prefatory "Big ...

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    Bertha (tunnel boring machine) - Wikipedia

    Bertha resumed tunnel boring on December 22, 2015, ... Some media have also referred to the machine as "Big Bertha". In March 2016, ...

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    Bertha breaks through: Watch the tunnel boring machine's ...

    After more than three years of drilling, Bertha's journey is coming to an end on Tuesday—and the big moment is being livestreamed.

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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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    Watch Bertha, the world's largest tunnel boring machine ...

    Watch Bertha, the world's largest tunnel boring machine, emerge from beneath Seattle. by Kurt Schlosser on April 4, ... Bertha's big breakthrough is here: ...

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    big bertha tunneling machine - Cutting Head

    big bertha tunneling machine. KAMY is the worldwide leader in manufacturing hydraulic cutters, road headers, tunnel support systems, ...

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    Tunnel boring machine - Wikipedia

    A tunnel boring machine ... The machine was named "Big Becky" in reference to the Sir Adam Beck hydroelectric dams ... Bertha completed boring the tunnel on April ...

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    Alaskan Way Viaduct - Tunneling

    The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: ...

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    SR 99 (@BerthaDigsSR99) | Twitter

    @BerthaDigsSR99. Bertha completed her dig and now we're ... New photos on Flickr highlight continuing progress on road and ramp connections at the tunnel's south ...

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    Pictured: The world's most powerful tunnel-boring machine ...

    Engineers are still desperately trying to rescue the world's largest tunneling machine that is stuck under the city of Seattle. Bertha, a five story-high drilling machine that was custom-built to drill the Alaska Way, ground to a halt in December after stopped by an 8-inch diameter steel pipe. But ...

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