SEATTLE – With a cloud of dust, Bertha — Seattle’s tunnel boring machine — reached the end of her long, troubled journey, a milestone in a multibillion-dollar project to replace an aging highway ...

OLYMPIA, Wash — The trial to determine who is to blame for the construction delays of Seattle's State Route 99 tunnel and cost overruns started Thursday in Thurston County. Jurors heard opening ...

The world's largest tunnel-boring machine completely broke through the north end of the tunnel shortly before noon Tuesday. Gov. Jay Inslee was on site to watch, and lauded the breakthrough as a ...

Seattle's tunnel boring machine that's been digging beneath the city for the State Route 99 tunnel reached the end of its 1.75-mile journey Tuesday, nearly four years after it embarked on the job.

Update: Bertha has already begun boring forward toward the Alaskan Way Viaduct. Crews fired up the boring machine at 9 a.m. Friday morning. Read more. Despite the rough start to the Seattle tunnel ...

Bertha has finished digging through five of the 10 zones needed for completion of the new SR 99 tunnel under downtown Seattle. Now in zone 6, it will soon dig along side the Pike Place Market. The ...

Bertha’s labors may soon be over as Seattle’s great boring machine may break through before the end of March. The massive digger will punch out of the state Route 99 tunnel in coming days, Washington ...