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tunnel boring machine seattle

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

Apr 03, 2017 · Workers make preparations to lift the cutting head from Bertha, the world's largest tunnel-boring machine, and lift it out for repairs in Seattle, Washington March 9, 2015.

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Reanimating Bertha, a Mechanical Behemoth Slumbering Under ...

Aug 01, 2014 · SEATTLE — Sometime this fall, a huge vertical shaft lined with 84 concrete pilings, designed to hold back the slurry that defines underground Seattle, will be finished, and a Mr. Fix-It operation unlike any other will begin. The world's biggest tunnel-boring machine, nicknamed Bertha — which ...

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Tunnel Boring Machine Seattle - Image Results

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Stuck In Seattle | Bloomberg Business - Business, Financial ...

Stuck in Seattle The Aggravating Adventures of a Gigantic Tunnel Drill By Karen Weise ... STP decided to buy the tunnel-­boring machine from Hitachi Zosen, ...

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Seattle's tunnel boring machine finishes digging a hole under ...

Apr 03, 2017 · Seattle's boring machine, Bertha, finally emerges after four years.

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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 - Video Results

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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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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.

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Steel pipe in the way of Seattle tunnel-boring machine Big ...

Jan 02, 2014 · SEATTLE — Experts say they've at least partially solved the mystery of what's been blocking a massive tunnel-boring machine beneath downtown Seattle for the past month: a steel pipe. The $80 million, five-story-tall machine, dubbed "Bertha," is digging a new path for State Route 99, one of the ...

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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'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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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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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, ...

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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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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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Front-End Of Tunnel-Boring Machine Freed From Seattle Pit

Engineers have removed the cutter head from the enormous tunneling machine nicknamed Bertha. The malfunctioning part had been stuck for more than a year in a highway project under the city's downtown.

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

Dec 24, 2013 · Named after one of Seattle's early mayors, ... Big Bertha -- world's largest tunnel boring machine -- facing big Seattle challenge CBS Evening News.

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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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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...

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