how seattle boring machine works

Seattle's tunnel-boring machine starts moving again | Q13 FOX ...

Dec 21, 2015 · SEATTLE (AP) — The tunnel-boring machine called Bertha came to life after almost two years of repair work and is set to restart its journey under Seattle.

Video: How a tunnel boring machine works | Sound Transit

Video: How a tunnel boring machine works. Skip to main content. Follow @SoundTransit. Sound Transit ... Sounder Everett-Seattle ; Sounder Lakewood-Seattle

Seattle's unbelievable transportation megaproject fustercluck ...

Seattle is involved in a slow-motion catastrophe, ... In July 2013, they bring in Bertha, the largest tunnel-boring machine in the world, ...

Seattle tunnel boring, stalled for a year, to resume in April ...

Dec 21, 2014 · The massive tunnel-boring machine stopped work on the 2-mile tunnel in December 2013 after going about 1,000 feet, and the massive machine that's stuck underground needs repairs before drilling can resume.

Seattle Tunnel Boring Machine - How Your World Works

The effort to replace the aging and elevated Alaskan Way Viaduct in downtown Seattle involved a decade of planning that finally settled on digging a tunnel under the city. Bertha, a 57.5-foot-diameter tunnel-boring machine, was built in Japan and shipped over for the job. Tunneling began in earnest on July 30, 2013.

Hard grind: The epic journey of the world's biggest tunnel ...

In Seattle, about 400 people ... Hitachi Zosen Sakai Works in Osaka, ... Bertha is the largest tunnel boring machine ever built (Credit: WSDOT) Diagram of Bertha ...

Bertha (tunnel boring machine) - Wikipedia

Bertha is 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. It was made by Hitachi Zosen Sakai Works in Osaka, Japan, and the machine's assembly was completed in Seattle in June 2013.

Washington Machine Works | Home

Full-service machine shop in Seattle specializing in large parts and hard-to-work materials.

Alaskan Way Viaduct - Tunneling

The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: the machine's cutterhead being lowered into the launch pit near Seattle's stadiums). The machine completed its tunneling on April 4, 2017 and was fully dismantled and removed from the tunnel on Aug. 23, 2017.

Tunnel boring machine - Wikipedia

It was delivered to Seattle, ... Micro tunnel boring machine is quite similar to general Tunnelling shield but on a ... Video on how a Tunnel Boring Machine works;

seattle tunnel boring machine update - Roadheaders

This update on Seattle's stalled tunnel boring machine came Friday from Roland Ramberg, CEO of The Gear Works, a large gearbox building and repair ...

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

Apr 03, 2017 · WIRED's biggest stories ... Seattle's beleaguered boring behemoth clawed its way ... After a 200-ton tunneling machine finished its work under New ...

Public tours site of Seattle's 'big dig' - seattlepi.com

Public tours site of Seattle's ... of the world's largest-diameter tunnel boring machine which will ... rig works during a tour of the Highway 99 tunnel ...

Seattle Hits Another Milestone on Light-Rail Tunnel Project ...

Chuncks of a concrete support beam fall as a tunnel boring machine, turning a 21-foot diameter cutting head, breaks through a support wall in Seattle.

Alaskan Way Viaduct - Follow Bertha

The SR 99 tunneling machine, nicknamed Bertha, has completed her work. ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, ...

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.

Parts of massive Seattle boring machine Big Bertha to be ...

Mar 09, 2015 · Crews trying to repair Seattle's massive tunnel boring machine say they hope to get it drilling again by August.

Tunnel machine Bertha expected to bust out of vault this week ...

A repaired and rested tunnel machine Bertha launched its new year by boring forward 6½ feet on Monday, to the north edge of its repair vault along the Seattle waterfront.

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

The biggest tunnel-boring machine ever to get stuck under Seattle. ... To understand how a tunnel-boring machine works, think of an earthworm. The worm eats.

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

Bertha broke down under the city of Seattle after striking an eight ... repair work to get the machine moving again ... that was blocking the boring machine, ...

Washington Machine Works Seattle, Washington, WA 98108

Washington Machine Works has been performing machining services in Seattle since 1985. Our work range includes production machining, prototyping, assembly and industrial equipment repair. We work with any machinable material from aluminum to manganese, plastics and phenolics.

How does the world's largest tunneling machine work? Take a ...

May 08, 2013 · SEATTLE - The world's largest tunneling machine, Bertha, is a complex machine. Now, residents around the sound are getting a look at how it works. An animated video created by Bertha's manufacturer, Hitachi Zosen Corp.

Washington Machine Works | Home

Washington Machine Works has been providing full-service machining services to industry and government since 1985. We work closely with our customers to machine unique parts. Our team has has a large percentage of journeyman machinists and an average tenure at WMW of 15 years with an average machining experience of 20+ years.

Seattle tunnel machine begins drilling after 2-year break ...

Jan 06, 2016 · Seattle's tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level along the city's waterfront.

EXCLUSIVE: Bertha repair company offers first look into how ...

Jul 09, 2015 · Bertha's 24 gearboxes and motors are OK, and the giant tunnel machine's rebuilt drive gears will be delivered to the drilling site by early August. This update on Seattle's stalled tunnel boring machine came Friday from Roland Ramberg, CEO of The Gear Works, a large gearbox building and repair ...