Boring Bertha Has Been Freed And Will Try Again | KUOW News and Information

Boring Bertha Has Been Freed And Will Try Again

Mar 31, 2015

Engineers have removed the cutter head from the enormous tunneling machine nicknamed Bertha. The malfunctioning part had been stuck for more than a year in a highway project under Seattle's downtown.

Ongoing coverage of Bertha, Seattle's tunneling machine.