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Bertha | The Seattle Times

Read more about the technical challenges and rising costs of the Highway 99 tunnel project, and the successes and travails of Bertha, the biggest-ever boring machine.

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Seattle's tunnel machine Bertha breaks through nearly 4 years

Seattle's tunnel machine Bertha breaks through A close up of Bertha's cutterhead as she emerged from the State Route 99 tunnel Tuesday, April 4, 2017. Photo: WSDOT.

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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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Watch Bertha, the world’s largest tunnel boring machine

... the world’s largest tunnel boring machine, ... The tunneling phase of the project began in ... Bertha’s big breakthrough is here: Seattle tunnel machine will ...

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Seattle's Big Bertha tunnel drill blocked by mystery

12/17/2013 · Something is blocking a massive drill from carving out a new future for Seattle's commuters. ... Seattle's Big Bertha tunnel drill blocked by mystery object CBS This Morning ... Emerald City's ...

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

Seattle's plan to build one of the world's biggest vehicle tunnels is over budget and way behind schedule. ... A massive tunneling machine breaks through a 5-foot-thick concrete wall on April 4 ...

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North Delta Water Agency

The North Delta Water Agency serves portions of Sacramento, San Joaquin, Solano and Yolo counties. The Agency also administers a 1981 Contract with the Department of Water Resources.

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World's biggest tunnel machine Bertha emerges from beneath

World's biggest tunnel machine Bertha emerges from beneath Seattle Machine's 1.7-mile, 4-year journey to dig a car tunnel ends. ... It was hard to notice the big moment of breakthrough on a ...

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Big Bertha, world’s largest tunnel-boring machine, arrives

... world’s largest tunnel-boring machine, arrives in Seattle ... machine is Seattle Tunnel ... Bertha tunneling machine Big Bertha Big Bertha ...

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

... world’s largest tunnel-boring machine, arrives ... s welcome in Seattle where Bertha will begin ... Bertha tunneling machine Big Bertha Big Bertha ...

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Prosaic Pipe Stymied Seattle’s Big Bertha - The New

Jan 04, 2014 · SEATTLE — The unknown object buried beneath this city, big enough to stop the world’s largest-diameter tunnel-boring machine in its tracks last month and tantalizing enough in its mystery to set off a cottage industry of wispy romantic spec

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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 …

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Alaskan Way Viaduct - Tunneling

The tunneling machine known as Bertha began tunneling ... the machine's cutterhead being lowered into the launch pit near Seattle's stadiums). The machine ...

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Seattle tunnel machine Bertha reaches halfway point - GeekWire

The receiving pit at the north end of Seattle’s SR 99 tunnel project, where Bertha the tunnel machine will break through next year. (Kurt Schlosser / GeekWire photos) The SR 99 tunneling machine ...

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Save time, stay dry on foot in Seattle’s ‘hidden’ passageways

The city has been regrading, excavating and hewing cuts through the land since its beginning, defining Seattle as “the biggest powerhouse of tunneling on the West Coast,” according to Robert “Red” Robinson, the director of underground services for Shannon

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SR 99 tunnel slated for fall opening: What to know about

SEATTLE -- Bertha finished boring the path for a new tunnel under Seattle nearly one year ago.. Since then, construction crews have finished installing a double-deck highway end-to-end inside the tunnel.

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Bertha repair will take longer — there are lots of broken

Now that stalled tunnel machine Bertha’s front end is disassembled, the damage looks worse than project experts thought — and contractors will miss their goal to resume digging in August.

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Ryan Holeywell - governing.com

Ryan Holeywell is the communications manager for the Texas Medical Center Health Policy Institute in Houston. He previously worked at Rice University's Kinder Institute for Urban Research.

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Bertha (tunnel boring machine)

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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JM Eagle - Official Site

With greater strength, capacity, and geographic reach than ever before, JM Eagle's resources provide an unmatched capability for new products, new materials, new applications, and new processes.

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big bertha tunnel - tunnelling roadheader

Big Bertha: World's Largest Tunneling Machine To Be Rescued. Big Bertha, the world's largest tunneling machine, is currently at rest underneath Seattle, yet engineers have devised a way to re-animate the stranded behemoth.

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Seattle tunneling machine ‘Bertha’ hits another snag | Q13

SEATTLE — Seattle’s downtown tunneling project has hit another snag. The Washington Department of Transportation said Monday that “Bertha,” the boring machine digging the tunnel, has hit ...

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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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Alaskan Way Viaduct - Home

For decades, surface Alaskan Way stretched along the downtown waterfront, connecting travelers to the waterfront piers and providing north-south passage through downtown.

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Big Bertha – world’s largest tunnel boring machine

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 Blackstone reports on what the high-tech ...

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Seattle's tunnel machine Bertha breaks through nearly 4

It's official - Bertha has broken through! Seattle's tunnel boring machine that's been digging beneath the city for the State Route 99 tunnel reached the end of its 1.75-mile journey Tuesday ...

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

The machine arrived to Seattle on ... pit that crews will use to access and repair Bertha, the SR 99 tunneling machine. (WSDOT) ... repair-access pit and began tunneling again under Seattle’s ...

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Seattle's Big Bertha Tunneling Machine Is Finally Back on

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

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World's biggest tunnel machine Bertha emerges from

World's biggest tunnel machine Bertha emerges from beneath Seattle ... It was hard to notice the big moment of breakthrough on a machine ... bertha tunneling machine

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Under Seattle, a Big Object Blocks Bertha. What Is It? - The

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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