Crews discovered an 8-inch steel pipe protruding through one of the openings of Bertha the tunnel boring machine today. The Seattle Tunnel Partners aren't ready to say exactly what is blocking Bertha, ...

SEATTLE (AP) — Seattle's giant drilling machine has passed the halfway mark as it digs beneath the city to complete a new highway tunnel. The Washington Department of Transportation said Monday that ...

The tunnel boring machine under Seattle got its name, “Bertha,” through a contest for kindergarten through twelfth graders. The name had to be female and have roots in Washington state history. Bertha ...

More than a year before the new State Route 99 tunnel is scheduled to open to vehicles in Seattle, I took a ride Thursday from one end of the 2-mile tube to the other, beneath this booming city and ...