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Massive Tunneling Machine Arriving In Seattle

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SEATTLE (AP) — The world’s widest tunnel boring machine arrives in Seattle in pieces Tuesday aboard a ship from Japan.

The $80 million machine called Bertha was built at a factory in Osaka. It will be reassembled in a pit to begin the year-long dig to create a two-mile tunnel under downtown Seattle.

The new section of Highway 99 replacing the Alaskan Way Viaduct will have a diameter of nearly 58 feet.

Copyright 2013 The Associated Press.

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