The Washington State Department of Transportation has halted digging for the repair pit to access Bertha – the SR99 tunnel machine – after archaeologists found shell deposits, WSDOT announced late ...
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This huge machine reaches places others can't
Watch a powerful long-reach excavator working at the edge of a water pit, digging and shaping the ground beneath the surface. These specialized heavy machines are designed to reach deep and far, ...
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 ...
Digging resumed Thursday in a pit near the Seattle waterfront that will be used to repair a huge machine that broke down while trying to bore a highway tunnel under the city. The Seattle Daily Journal ...
SEATTLE - Bertha, the world's largest tunnel boring machine, is in position to be torn apart so it can be repaired. State transportation officials say the broken machine reached a stopping point ...
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