Bertha

Seattle’s Tunneling Machine Bertha Veers Off Course
Seattle’s Tunneling Machine Bertha Veers Off Course
SEATTLE (AP) — Recent surveys have found that Seattle's new highway tunnel is a few inches off course and digging has stopped until next week while more measurements are made. Seattle Tunnel Partners project manager Chris Dixon said Wednesday that surveys found the concrete tunnel rings being installed behind the tunnel machine known as Bertha varied "a couple inches" beyond a 6-inch tol
Seattle Tunnel Delay Costs Now Expected to be $149 Million
Seattle Tunnel Delay Costs Now Expected to be $149 Million
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