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. It was made by Hitachi Zosen Sakai Works in Osaka, Japan, and the … See more The name Bertha, after Seattle's first female mayor, Bertha Knight Landes, was chosen by a panel (that included the Governor and Transportation Secretary) from 150 submissions from kindergarten through 12th … See more Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel … See more The two-year stoppage of Bertha has been criticized as an example of a political boondoggle by opponents. In January 2015, two Republican state senators introduced a See more • The World's Largest EPB Shield Tunneling Machine • Bertha on Twitter • SR 99 tunneling machine - Bertha by WSDOT on Flickr See more Dedication and first section The machine began excavation of the 1.7-mile-long (2.7 km) route on July 30, 2013, with completion of … See more • Beck tunnel boring machine – former world's largest tunnel boring machine, prior to Bertha • Tuen Mun–Chek Lap Kok TBM – … See more Web3 Dec 2015 · The drill, known as Bertha, broke in December 2013, with repair efforts ongoing since then. In late November, the drill made its first test rotations, and work is scheduled …
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WebFrommer S Seattle 2010 Silent Film Stars on the Stages of Seattle - Dec 10 2024 Before they became household names, many would-be Hollywood stars began their careers as small-time ... Shaking Drill Engine born. But on its first test run the Boneshaker went terribly awry, destroying several ... Web5 Jan 2014 · The Washington State Department of Transportation said Friday that the steel pipe that stopped Bertha, as the borer is nicknamed, on Dec. 6 is a 119-foot-long well … pediatric dentist in twinsburg ohio
The largest tunnel boring machine (TBM) in the world finished …
Web10 Mar 2024 · Bertha remained stranded some 1,028 feet into its underground journey from Seattle’s Sodo to South Lake Union after overheating in December 2013. Crews had to … WebThe $80 million tunnel boring machine (TBM) Bertha was created for this project by Hitachi Zosen Corporation near Osaka, Japan. The 326 ft (99 m), 6,700-short-ton (6,100 t) TBM was disassembled into 40 pieces and shipped to Seattle, where it was reassembled in the launch pit near the south end of the future tunnel. [63] Web31 Mar 2024 · The star of the show has been the massive drill nicknamed Bertha, which boasts a 57-foot, 6-inch-diameter cutter head with more than 700 cutting tools, some weighing as much as 600 pounds. Bertha, named after Seattle’s first and only female mayor, Bertha Knight Landes, began the journey in July 2013. meaning of scurrying