Watch a powerful long-reach excavator working at the edge of a water pit, digging and shaping the ground beneath the surface.
Seattle Tunnel Partners have resumed digging a repair pit to access the stalled tunnel drilling machine sitting idle under the waterfront. State archaeologists have determined shell deposits ...
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 ...