tunnel-boring machine

SEATTLE (AP) — Bertha is taking a break over the holidays. KING-TV reports that Seattle's tunnel-boring machine will be idle over Christmas so workers can spend time with their families and maintenance can be performed. The machine is sitting about 160 feet below Third Avenue...

OLYMPIA (AP) — Delays on the tunnel replacement for the Alaskan Way Viaduct through Seattle are now expected to cost the state about $149 million in overruns, a third less than feared in July. Joe Hedges, program administrator for the Washington State Department of Transportation, said the main reason for the revised figure is that tunnel-boring machine Bertha has made steady progress since spring

OLYMPIA, Wash. (AP) — Seattle voters overwhelmingly rejected a measure that would've built an elevated park in downtown Seattle using part of the Alaskan Way Viaduct. More than 80 percent of early votes Tuesday were cast against Initiative 123, which was opposed by many city leaders who prefer a comprehensive redesign of the city's waterfront once the viaduct is removed and replaced by a tunnel...

  SEATTLE (AP) — The state has halted the digging of the new Highway 99 tunnel under downtown Seattle after a sinkhole formed along the waterfront. Gov. Jay Inslee and the Department of Transportation said Thursday they ordered Seattle Tunnel Partners to suspend digging operations by the massive tunnel-boring machine known as "Bertha" until the contractor can determine what caused the si

SEATTLE (AP) — Seattle's tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level. After being out of commission for about two years, the machine called Bertha has tunneled about 73 feet and installed 12 concrete tunnel rings since it started moving again on Dec. 22....

SEATTLE (AP) — The tunnel-boring machine called Bertha came to life after almost two years of repair work and is set to restart its journey under Seattle. Building a tunnel was the preferred option to replace the Alaskan Way Viaduct after it was damaged in a 2001 earthquake, but it was delayed in December 2013 after the machine overheated. The...