Equipment Type

Unknown Object Halts Seattle's Bertha

A Washington Department of Transportation representative said Bertha, the tunnel boring machine digging below the streets of Seattle, struck an unknown object and is now stuck.

December 10, 2013

A Washington Department of Transportation representative said Bertha, the tunnel boring machine digging below the streets of Seattle, struck an unknown object and is now stuck.

According to KOMO News, Bertha has been stopped since Dec. 6 and has not been damaged. It is unknown when the machine will resume digging or whether this will impact the project’s completion date.

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Source: KOMO News

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