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, ...

A buried steel pipe is mostly to blame for stopping the giant tunnel-boring machine Bertha, which has been stuck since Dec. 6 along the Seattle waterfront near South Main Street. The long pipe was an ...

An 8-inch-wide steel pipe. That’s what is likely blocking Bertha, the boring machine creating a tunnel through downtown Seattle to replace the Alaskan Way Viaduct. Officials say the steel pipe is ...

A steel pipe may be blocking Bertha, the machine that is digging the tunnel to replace the Alaskan Way Viaduct. Officials indicated that the pipe was put there in 2002 by state Department of ...