00000181-fa79-da89-a38d-fb7f2a000000Bertha, the world's biggest tunneling machine, is a five-story-tall monstrosity of drilling tasked with digging out the tunnel for State Route 99 to replace the Alaskan Way Viaduct. It's journey to the center of the earth underneath downtown Seattle began in July 2013, and since then the project has seen its fair share of successes and failures.Follow the progress of the $3 billion megaproject with KUOW.
Why Isn't Bertha Moving?
David Hyde talks with Mike Lindblom, Seattle Times transportation reporter, about why Bertha hasn't moved since December.
Bertha is the world’s biggest tunnel boring machine that has been charged with digging out the replacement path for the Alaskan Way Viaduct under Seattle.