More From Seattle Big Bertha

Board rules WSDOT should have given contractor more warning about pipe struck by Big Bertha before stall

Board rules WSDOT should have given contractor more...

Posted by Wayne Grayson on May 12, 2015

In regard to the drilling of the new State Route 99 tunnel below Seattle, the Washington State Department of Transportation ...

VIDEO: Big Bertha breaks through: tunnel-boring machine enters repair pit, ready for disassembly

VIDEO: Big Bertha breaks through: tunnel-boring machine...

Posted by Wayne Grayson on Mar 09, 2015

Though she remains very far from being done, Big Bertha completed a very important leg in her journey beneath Seattle ...

A steel pipe is what brought Big Bertha, the world’s largest tunnel-boring machine, to a halt

A steel pipe is what brought Big Bertha, the...

Posted by Wayne Grayson on Jan 06, 2014

The mystery is solved—in part at least. After Big Bertha, the world's largest tunnel-boring machine, was brought to an abrupt halt ...

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