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Why Seattle's Huge Tunnel-Boring Machine Is ... North America's largest tunnel-boring machine got stuck just 10 percent of the ... seattle; infrastructure news;
Dec 21, 2015 · SEATTLE (AP) — The tunnel-boring machine called Bertha came to life after almost two years of repair work and is set to restart its journey under Seattle.
Seattle's tunnel boring machine Bertha ... - Q13 FOX News. Apr 03, 2017 · Bertha, the machine digging a 1.75 mile tunnel under Seattle to replace a waterfront bridge with an underground roadway, had just 30 feet of mining left at the beginning of the day Tuesday.
The SR 99 tunneling machine, nicknamed Bertha, ... For the latest tunnel ... this page tracked her progress beneath Seattle. With the machine dismantled and ...
The 1.7-mile tunnel bypassing downtown Seattle is ... from retired tunnel-boring machine Bertha will be displayed ... shape inside the new Highway 99 tunnel ...
Apr 03, 2017 · Bertha, the machine digging a 1.75 mile tunnel under Seattle to replace a waterfront bridge with an underground roadway, had just 30 feet of mining left at the beginning of the day Tuesday.