"Bertha" resumes digging in Seattle, advances 3 feet

09/23/2013 | Seattle Times, The · KCPQ-TV (Seattle)

Tunnel-boring machine Bertha has resumed drilling the Highway 99 tunnel under Seattle, boring three feet. The TBM dug half of the 1.7-mile tunnel before being idled on Aug. 20 by a labor dispute and various technical problems. "At this point, we've been pleased with the builders' attention to getting Bertha moving again and starting tunneling, and that it is able to move three feet," said Todd Trepanier, program administrator for Washington Department of Transportation.

View Full Article in:

Seattle Times, The · KCPQ-TV (Seattle)

Published in Brief: