bertha tunneling machine

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

    Now what? What do you do when the world's largest tunneling machine is, essentially, stuck in the mud?Bertha is 60 feet under the earth, and you're on the surface watching a squirmy public swap rumors of cost and delay on the $1.35 billion tunnel component of an even larger transportation project, and the naysayers are howling: Just you watch ...

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  • Bertha (tunnel boring machine) - Wikipedia

    Bertha resumed tunneling on Friday, April 29, 2016, digging under the Alaskan Way Viaduct. Tunnel boring was completed on April 4, 2017, with Bertha's cutterhead ...

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  • Bertha tunneling machine lifted to the surface - seattlepi.com

    Bertha's 2,000-ton, 57.5-foot cutterhead and drive unit make the slow, 120-foot upward journey from the pit to street level for later repair, photographed Monday, March 30, 2015, in Seattle, Washington.

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

    On Saturday,the world's largest tunnel boring machine was ... for a tunneling machine and allows it to ... of Bertha, a tunnel boring machine ...

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

    From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on Tuesday, completing a final push in a years-long effort to create space for a new highway beneath the city.

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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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  • Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done ...

    Apr 03, 2017 · Bertha the tunneling machine broke through a new concrete wall into a disassembly pit. At first it was hard to see the machine's arrival through clouds of dust.

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  • Sand Grinds World's Largest Tunneling Machine To A Halt - NPR.org

    Contractors working for the state of Washington are planning a high-stakes operation to rescue Bertha — the world's largest tunneling machine. Bertha is supposed to be boring a 2-mile highway tunnel under downtown Seattle, but it got stuck in December. Bertha is on Seattle's waterfront, between ...

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  • Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

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

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  • Bertha Tunneling Machine - Image Results

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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 - 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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  • Bertha (tunnel boring machine) - Infogalactic: the planetary ...

    "SR 99 tunneling machine tweets her name: Bertha" (Press release). Washington State Department of Transportation. Archived from the original on November 10, 2014.

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  • World's largest tunnel-boring machine finally breaks through

    World's largest tunnel-boring machine finally breaks through. By Associated Press. ... For a while, they looked to be right as the machine, known as Bertha, ...

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  • Drone video captures closer look at Bertha as tunnel machine ...

    Update: WSDOT released a new drone video on Thursday (above) with additional footage and sound to replace the previous video. WSDOT says Bertha chewed through 1,000 tons of concrete before breaking through on Tuesday. When Bertha the tunneling machine busted through the end wall on Tuesday to ...

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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 breaks through Seattle waterfront tunnel ...

    Watch: Bertha breaks through Seattle ... This video takes you 200 feet underground for a rare look at hyperbaric work inside Seattle's SR 99 tunneling machine, Bertha.

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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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  • #BerthaCam: Watch the giant boring machine at the end of ...

    Giant tunneling machine Bertha breaks through the north portal wall on Tuesday April 4th, 2017 after years of delays. (Mike Siegel / The Seattle Times)

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  • It's official: Bertha's no more (Video) - Puget Sound ...

    Aug 22, 2017 · Puget Sound Business Journal's 2017 40 under 40 Honorees! ... Take a 360-degree video tour of the Bertha tunneling machine . Crane Watch. Search for ...

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  • Seattle tunnel progress a major contrast to past problems

    Bertha, the Seattle tunnel boring machine, is now almost halfway done with the 385-foot distance under the Alaskan Way Viaduct. And for the first time in more than two years, it looks like part of the project could be done on time. When tunneling started in 2013, Bertha was expected to go 35 feet ...

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  • The World's Largest Tunneling Machine Is (Finally) Getting ...

    Bertha, the world's largest tunneling machine, has been stuck under downtown Seattle since it broke in December 2013. Engineers have had to concoct a massive and expensive rescue plan—essentially a whole construction project in itself. And yesterday, the Bertha's broken cutter head was finally ...

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  • Bertha's breakthrough just 'halftime' for tunnel project ...

    Bertha's breakthrough just 'halftime' for tunnel project ... Watch tunnel machine emerge; Bertha timeline: ... a tunneling tradition.

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  • We Finally Found What's Blocking The World's Largest ...

    Bertha, the world's largest tunneling machine, churning through the rock and mud beneath Seattle, has hit a mysterious roadblock—so mysterious, it is only known for now as "the object."

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  • Bertha Tunneling Machine - Video Results

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