Bertha finally nears the finish line

Seattle Times Traffic Lab reporter Jessica Lee has an update on Bertha and what happens next w/the viaduct replacement project.

The giant drill digging the new Highway 99 tunnel under downtown Seattle has almost completed its mission. But, it's been a bumpy road for the drill known as Bertha over the past four years. Seattle Times Traffic Lab reporter Jessica Lee breaks down this massive project.

Copyright 2017 KING


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