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Tunneling machine arrives for big Seattle dig

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Associated Press
Published:
SEATTLE -- The world's widest tunnel boring machine arrived in Seattle in pieces Tuesday aboard a ship from Japan.
The ship was greeted in Elliott Bay by a fire boat spraying water.
The $80 million machine called Bertha was built at a factory in Osaka. Its 41 pieces 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.
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