TITLE

Giant 'Bertha' Stuck Under Seattle With Broken Seals

AUTHOR(S)
Newcomb, Tim
PUB. DATE
February 2014
SOURCE
ENR: Engineering News-Record;2/24/2014, Vol. 273 Issue 8, p21
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
The article reports on the Alaskan Way Viaduct project as Seattle Tunnel Partners (STP) await repairs to Bertha, the 7,000 ton, 300-foot long tunnel-boring machine that is attempting to dig a state Route 99 tunnel underneath Seattle, Washington as of February 2014. It notes strategies by STP, a joint venture of Dragados USA and Tutor Perini Corp., to reach Bertha 50 feet below the ground after discovering the broken bearing seals.
ACCESSION #
94750948

 

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