Stuck In Seattle Bloomberg Business Business, Financial & Economic

Seattle tunnel machine Bertha completed disassembled The SpokesmanReview

Front of a model of Bertha at Milepost 31, the tunnel project information center Walls of tunnel in place in January 2017, about two years before the 2019 opening date. Bertha was a 57.5-foot-diameter (17.5 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle, Washington, United States.

Seattle's Big Bertha tunnel drill blocked by mystery object CBS News

Prosaic Pipe Stymied Seattle's Big Bertha. Drilling and other equipment last month in Seattle, where a tunnel-boring machine was blocked. Ted S. Warren/Associated Press. By Kirk Johnson. Jan. 3.

Big Bertha world’s largest tunnel boring machine facing big Seattle

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.

Seattle's massive Bertha tunnel drill is up for repair, but still faces

The big machine's purpose in life is to bore a a 9,270-foot tunnel running under the Elliott Bay to replace the seismically unsound Alaskan Way Viaduct. When Japanese firm Hitachi Zosen Sakai.

Bertha's big breakthrough is here Seattle tunnel machine will emerge

More than 150 feet below the streets of Seattle, Bertha presses on, boring a 57.5-foot diameter tunnel underneath the city. The largest tunnel boring machine (TBM) in the world when it was built.

Stuck In Seattle Bloomberg Business Business, Financial & Economic

When Bertha began tunneling, the average median home value in Seattle was $298,000, according to Zillow's home-value index. Now, it's $420,200. Median monthly rent, as calculated by Zillow.

Inslee Says 'Big Bertha' To Resume Drilling Seattle Tunnel NW News

Big Bertha was manufactured and supplied by the Hitachi Zosen Corporation to Seattle Tunnel partners for the SR 99 tunneling project. It measures 57.2 feet (17.5 m) in diameter, which makes it the largest tunnel boring machine in history. To put in perspective, it would take about 10 average sized men standing on each other's shoulders to.

In Seattle, A Giant TunnelBoring Machine Named Bertha Finishes Its Dig

Released on 04/05/2017. Transcript. Bertha has broken through. After four long years underground, Seattle's massive tunnel-boring machine. completed its epic, arduous 1.7-mile journey. by chewing.

Bertha the Giant Drill Is Ready to Rumble in Seattle Bloomberg

SEATTLE -- Bertha is done digging. After four years of moving -- and sitting broken for a while -- underneath downtown Seattle, the world's largest tunnel-boring machine on Tuesday reached the end with much fanfare. Q13 News streamed it live online and on Facebook and 2 million people watched the cutterhead break the final wall into the disassembly pit near Seattle Center.

New photos With viaduct in rear view, Bertha begins tunneling under

Paul figures Bertha put up five or six concrete rings that evening, extending the tunnel by another about 30 to 36 feet. Sometime the following morning, on Wednesday, December 4, the operators began seeing 3- to 4-foot pieces of pipe and a bunch of smaller pieces showing up on the video feed of the conveyor belt.

Delayed Seattle tunnel project draws comparisons to Boston’s Big Dig

On-again, off-again progress. Workers finally powered up the tunnel-boring machine on Dec. 22, 2015 after a two-year delay. Less than a month later, the drill broke through the concrete, repair.

Seattle's Bertha, world's largest tunneling machine, bound across

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Designer Edge Image of the Day Bertha The World’s Largest Tunneling

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Seattle school kids try to determine what's blocking Bertha Big

May 01, 2017. Bertha is the largest tunnel boring machine ever built. WSDOT. View 83 Images. View gallery - 83 images. On April 4, the world's largest tunnel boring machine broke through to the.

Bertha is drilling the last 100 feet of the SR 99 tunnel Curbed Seattle

The Seattle project neatly corroborates Flyvbjerg's findings. It is now due to be completed at the end of 2017, two years behind schedule, and Bertha's delays have only added to the steadily.

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

What Is It? In October, workers walked through the first rings of the highway tunnel being built under Seattle's waterfront toward the boring machine called Bertha. Washington State Department.