Canada’s tunnel saga offers lessons on Bertha fix – The Seattle Times

The Seattle Times
Seattle Tunnel Partners will soon announce whether the difficult task of reaching and replacing the damaged seals will be accomplished by entering through the front of the stalled machine — the most likely option, and the one used in Canada — or from
The $80 Million Machine Digging Seattle’s Underground Highway Hasn’t Moved Business Insider
Video: Seattle tunnel workers sleeping on the job?MyNorthwest.com
As Bertha’s problems persist, how’s the viaduct?KING5.com

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Source: Seattle News From Google

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