Web14 Apr 2015 · The sad saga of “Bertha,” the world’s largest tunnel-boring machine, reached a turning point at the end of March when crews finally raised its cutting face to the surface … Web4 Apr 2024 · Bertha Finally Breaks Through In Seattle. Workers prepare a gravel pad as a massive crane is used to lift a 2,000-ton section of the tunnel boring machine known as …
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Web1 Feb 2024 · February 1, 2024 A Herrenknecht tunnel boring machine (TBM) that will be used to build a 4.3 km (2.7-mile) combined sewer overflow project in Seattle, WA arrived at the Port of Tacoma in January and will be assembled in Seattle to build the tunnel along the Lake Washington Ship Canal. Web12 Apr 2024 · Seattle Public Utilities announced on Monday (April 12) that it has named its tunnel boring machine after local grunge band Mudhoney after a public vote. The giant piece of machinery will be... cgb connectors graybar
Crews prep boring machine for new sewage tunnel from Ballard to ...
Web19 Apr 2024 · A 21-ft, 8-in dia earth pressure balance tunnel boring machine has launched in Seattle to begin creation of a 2.7-mile-long tunnel that will store combined sewer overflow … Web14 Apr 2015 · The Seattle Times reports that a defective bearing that caused the shutdown is already being replaced. The rest of the assembly is being partly disassembled to replace damaged seals and other parts. The plan is to resume boring in August. Web10 Mar 2024 · 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 … cgbc table 5.106.5.2