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Latest Local and Pacific Northwest News

Local News

Seattle Tunnel Partners concept plan for repairing the SR 99 tunneling machine shows how the cutterhead will be removed once the tunnel machine moves into the pit.

Seattle Tunnel Partners concept plan shows how Bertha will move forward into the access pit.

Seattle Tunnel Partners concept plan shows the position of the access pit that will be used to reach the machine. Seattle Tunnel Partners is building a 120-foot deep circular pit in front of the tunneling machine. The pit will hold back soil and groundwater to provide crews a safe space to make repairs.

Seattle Tunnel Partners concept plan shows the tunneling machine's current location.

The Washington State Department of Transportation released images of Seattle Tunnel Partners' conceptual plans for repairs of the tunnel boring machine. This image shows seal system gaps on the tunneling machine.

Seattle tunnel boring machine repair timeline

Seattle, Washington, USA

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