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 ...

SEATTLE -- Seattle Tunnel Partners are back at work digging the access pit to the tunnel machine Bertha. Excavation came to a halt last month when some seashells were discovered during the dig. The ...

SEATTLE -- The Highway 99 tunnel boring machine Bertha will not resume digging anytime soon. The state said Thursday it will not let Seattle Tunnel Partners resume work until it gets better answers as ...

Crews are working on the final steps before Bertha, the Seattle tunnel boring machine, resumes digging next week. Seattle Tunnel Partners began filling in the access pit on Sunday, according to the ...

Seattle Tunnel Partners (STP) knew an 8-inch steel pipe was in Bertha’s path two years before the tunnel boring machine chewed through it, according to a new suit filed by Washington state. STP says ...

SEATTLE -- A machine digging a highway tunnel underneath Seattle that has sat idle since December likely won't begin working again for another six months, an official with the contractor said Friday.

Contractors building a new highway tunnel under downtown Seattle have started digging a 120-foot pit to rescue a stalled boring machine named Bertha. Seattle Tunnel Partners also is pumping out ...