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largest tunnel boring machine seattle

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Hydraulic Brake 7EB0807

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Hydraulic Brake EP03A

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Roadheader Connector

Roadheader Connector

Roadheader Connector

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MER1500 Hydraulic Rotary Digger

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Mining Screw Grouting Machine

  • Seattle tunnel machine completes mission three years late ...

    The world's largest tunnel-boring machine which is building a multi-billion dollar underground highway beneath Seattle has finally completed its missions - three years later than planned.

  • 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.

  • Fly Through the Massive Tunnel They're Carving Under Seattle

    Life has not been entirely kind to Bertha, the largest tunnel boring machine in all of North America. About two years ago, the machine, which measures 57 feet tall and 325 feet long, started excavating a two-mile tunnel under downtown Seattle.

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

    SEATTLE — The world's largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled...

  • 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.

  • 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.

  • Mystery object blocks world's largest tunnel boring machine ...

    Jan 12, 2014 · Originally published on December 12, 2013 The world's largest tunnel boring machine bumped into a mystery object under downtown Seattle last Friday, bringing...

  • Alaskan Way Viaduct - Tunneling

    The SR 99 Alaskan Way Viaduct, an elevated concrete structure built in the 1950s and vulnerable to earthquakes, is being replaced with a 1.7-mile tunnel running beneath downtown Seattle.

  • 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.

  • largest tunnel boring machine - About Application ...

    Nov 20, 2012 · What is the mysterious 'unknown object' blocking progress of huge drilling machine boring out new highway below Seattle? ... Largest Tunnel-Boring Machine ...

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

    Big Bertha, world's largest tunnel-boring machine, arrives in Seattle . Wayne Grayson ... Big Bertha is the world's largest tunnel-boring machine.

  • 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 ...

  • Barnhart Crane & Rigging

    World's Largest Tunnel Boring Machine Move. One of Barnhart's largest lifts ever took place in Seattle and involved the world's largest tunnel-boring machine.

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

    Dec 24, 2013 · 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...

  • 8 Massive Tunnels Being Built Right Now Under A City Near You

    Until being halted by a steel wellwater casing, the tunnel boring machine (TBM) named Bertha was digging a two-mile tunnel for the Alaskan Way Viaduct Replacement Program, repairing a double-decker highway along the Seattle waterfront that was damaged in the 2001 earthquake.

  • The rescue mission for Bertha, the world's largest tunnel ...

    The world's largest tunnel-boring machine has stalled deep beneath Seattle. There's only one way to finish the project. Bertha must be saved...

  • 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 largest tunnel boring machine (TBM) in the world finished ...

    Thursday, 22 June 2017 12:00 The largest tunnel boring machine (TBM) in the world finished drilling underneath Seattle Written by TheStructuralEngineer.info

  • Seattle Tunnel Boring Machine -- Bertha Rescue

    Why Seattle's Huge Tunnel-Boring Machine Is Still ... North America's largest tunnel-boring machine got stuck just 10 percent of the way through a 1.7-mile-long dig ...

  • Largest Tunnel Boring Machine Seattle - Video Results

  • The World's Largest Tunneling Machine - Governing

    The 7,000-ton machine, named after Seattle's first female mayor, is digging a tunnel this summer to replace the city's iconic highway, the Alaskan Way Viaduct.

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

  • List of tunnels in Seattle - Wikipedia

    List of tunnels in Seattle This is a list of tunnels built in the ... World's largest tunnel boring machine, 57.5 feet (17.5 m) in diameter: 2014–2016:

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

    The world's largest tunnel drill spent Tuesday ... Bertha's breakthrough just 'halftime' for tunnel ... A look back at the saga of Seattle's giant tunnel machine;

  • Bertha (tunnel boring machine) - Wikipedia

    Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.

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