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seattle tunneling machine

Alaskan Way Viaduct - Tunneling

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

Bertha (tunnel boring machine) - Wikipedia

2018-7-3 · The name Bertha, after Seattle's first female mayor, Bertha Knight Landes, was chosen by a panel ... The World's Largest EPB Shield Tunneling Machine; Bertha on …

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 …

Bertha, Seattle's SR 99 Tunneling Machine, Is Finally …

2017-4-4 · 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.

Bertha’s breakthrough just ‘halftime’ for tunnel …

2017-4-4 · Bertha’s breakthrough just ‘halftime’ for tunnel project ... A look back at the saga of Seattle's giant tunnel machine; ... a tunneling tradition.

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

2017-4-5 · From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed ... the world’s largest tunnel boring machine, ... The tunneling phase of the ...

Seattle's big tunnel project reaches a milestone, but …

2017-5-1 · A massive tunneling machine breaks through a 5-foot-thick concrete wall on April 4, the completion of a major phase in the construction of …

Seattle Tunnel Boring Machine -- Bertha Rescue

2014-12-11 · 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.

The World's Largest Tunnel-Boring Machine Must …

2014-9-16 · The biggest tunnel-boring machine ever to get stuck under Seattle. More than six months after Bertha had stopped her daily tunneling…

Tunnel boring machine - Wikipedia

2018-7-6 · A tunnel boring machine ... This is because tunneling with TBMs is much more efficient and results in shortened completion times, ... It was delivered to Seattle, ...

World’s largest tunnel-boring machine finally …

2017-4-4 · 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...

Sand Grinds World's Largest Tunneling Machine To …

2014-3-1 · Bertha, which got stuck digging a Seattle highway tunnel, is 60 feet below ground and can't move forward — or backward. Now a rescue plan is underway to fix the five-story-tall machine.

Bertha tunneling machine lifted to the surface - …

Bertha tunneling machine lifted to the ... in Seattle. The machine stalled underground while digging for a planned 1.7-mile tunnel intended to replace Seattle's ...

How did we get here? A look back on Seattle’s …

2017-3-10 · The machine arrived to Seattle on April 2, ... the drill broke through the concrete, repair-access pit and began tunneling again under Seattle’s downtown.

ROAD CONSTRUCTION: Seattle tunneling machine tweets …

The world’s largest-diameter tunneling machine now has a name, a face and a voice. Meet Bertha, the five-story-tall steel behemoth that will begin boring the SR 99 tunnel beneath downtown Seattle next summer.

The World's Largest Tunneling Machine Is (Finally) …

2015-4-1 · 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 ...

Seattle tunnel machine completes mission three …

Dramatic pictures show the machine, known as Bertha, breaking through a concrete wall at the end of its 1.75-mile journey under Seattle, Washington.

Seattle’s tunnel boring machine Bertha reaches end …

2017-4-5 · 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.

Seattle's massive tunneling machine on move again …

2015-2-19 · Seattle's massive tunnel boring machine Bertha, which had been halted for over a year, broke through the wall of the access pit …

Fixing Seattle Tunneling Machine Will Take Months …

2014-2-11 · SEATTLE (AP) — The contracting team hired to dig a highway tunnel under downtown Seattle told the Washington state Transportation Department on Monday evening that it will take months to fix broken seals on the world’s largest tunneling machine, the Transportation Department said. Seattle Tunnel ...

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