LINKEDINCOMMENTMORE

SEATTLE -- The world's widest tunnel boring machine arrived 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.

A look at where you can see Bertha

Read or Share this story: http://www.king5.com/story/news/local/seattle/2014/08/04/13238236/