Bertha, the SR 99 tunneling machine, reached her stopping point in the SR 99 tunnel access pit on Tuesday night, March 3, 2015. This cleared the way for Seattle Tunnel Partners to begin a disassembly process that will likely take weeks. This time lapse video captures part of her journey into the access pit.
View this complete post...Posts Tagged ‘Tunnel Boring’
Seattle, WA: Bertha Pushes Into the Access Pit
Monday, March 9th, 2015Washington State DOT: The Alaskan Way Viaduct Tunnel Boring Animation
Thursday, January 17th, 2013This animation shows an example of what a tunnel boring machine looks like and how it works. – wsdot on YouTube
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