How did we get here? A look back on Seattle’s tunnel machine Bertha
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Watch Bertha, the world’s largest tunnel boring machine, emerge from beneath Seattle
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Seattle's tunnel machine Bertha breaks through nearly 4 years later
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Watch: As disassembly continues, time-lapse video gives look inside Bertha the Seattle tunnel machine
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Bertha breaks through: World's largest boring machine completes tunnel under Seattle
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Bertha passes 1-mile mark: Video shows how Seattle’s tunnel machine is steered beneath city
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Bertha breakthrough: Seattle’s giant tunnel boring machine pushes through wall into rescue pit
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What's stopping big Bertha? Seattle debates mysterious object obstru…
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Bertha be gone: Time-lapse video shows summer-long dismantling …
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Watch: Bertha the Seattle tunnel machine goes under the torch as …
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Seattle tunnel machine Bertha moving toward access pit
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Seattle's crippled Bertha tunneler drills into rescue pit
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360° Inside The World’s Largest Tunnel Boring Machine
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DOT: Bertha damaged, tunneling on hold for now
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2 years after breakdown, Bertha nearly ready to tunnel
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A 360 video tour of Bertha and Seattle’s SR 99 tunnel
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