Bertha is drilling the last 100 feet of the SR 99 tunnel Curbed Seattle
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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.
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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.
The end is near for Bertha After nearly 2 miles in 4 years, tunnel
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Seattle's massive Bertha tunnel drill is up for repair, but still faces
Bertha has broken through. After nearly four years underground, Seattle's beleaguered boring behemoth clawed its way into daylight yesterday, leaving a 1.7-mile tunnel behind it.
Designer Edge Image of the Day Bertha The World’s Largest Tunneling
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.
New photos With viaduct in rear view, Bertha begins tunneling under
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.
In Seattle, A Giant TunnelBoring Machine Named Bertha Finishes Its Dig
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.
Inslee Says 'Big Bertha' To Resume Drilling Seattle Tunnel NW News
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.
Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done Digging WIRED
When it got stuck, big Bertha was only about 1,000 feet into a two-mile-long boring journey under Seattle for the tunnel that will replace the city's waterfront viaduct - a necessity after.
Seattle school kids try to determine what's blocking Bertha Big
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 Bertha, world's largest tunneling machine, bound across
Bertha has made it to the finish line. The celebrity boring machine's arrival near Seattle Center, some 29 months late, guarantees a Highway 99 tunnel bypassing downtown.
How did we get here? A look back on Seattle’s tunnel machine Bertha
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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.
Seattle tunnel machine Bertha completed disassembled The SpokesmanReview
SEATTLE — In a city known for a giant needle pointing toward space, everyone is talking about a massive machine stuck underground.They call her Bertha, a 57-foot-wide, earth-eating tunnel maker.
Bertha's big breakthrough is here Seattle tunnel machine will emerge
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.
Big Bertha, world's largest tunnelboring machine, arrives in Seattle
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.
