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Bertha Set to Resume Tunneling by Christmas

The access pit used to repair the Seattle tunneling machine nicknamed Bertha is being filled.

December 18, 2015

The access pit used to repair the Seattle tunneling machine nicknamed Bertha is being filled, a final step before the machine is ready to resume tunneling.

The boring machine is being used to build a tunnel for Highway 99 under Seattle. State DOT officials say it will be ready to start the project by December 23.

Source: KOMO

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