More From Seattle

Repairs to Big Bertha will include 86 tons of steel reinforcement to tunnel-boring machine’s bearing, cutter drive

Repairs to Big Bertha will include 86 tons of steel...

Posted by Wayne Grayson on Jun 18, 2014

The largest tunnel-boring machine in the world needs a bit of reinforcement against the "wet and abrasive soils" deep below ...

Repairs to Big Bertha will require a 12-story pit and removing the tunnel-boring machine’s cutterhead

Repairs to Big Bertha will require a 12-story pit and...

Posted by Wayne Grayson on Feb 28, 2014

Officials from the Washington State Department of Transportation have announced that in order to repair the world's largest tunnel-boring machine, ...

Construction worker uncovers mammoth tusk from Ice Age (VIDEO, PHOTOS)

Construction worker uncovers mammoth tusk from Ice Age...

Posted by Wayne Grayson on Feb 18, 2014

While excavating for plumbing trenches on the jobsite of a high-rise apartment complex in the Seattle, Washington neighborhood of south ...

Tunnel-boring machine Big Bertha shut down for “months” due to complexity of needed repairs

Tunnel-boring machine Big Bertha shut down for...

Posted by Wayne Grayson on Feb 11, 2014

Washington State Department of Transportation officials say Big Bertha, the world's largest tunnel-boring machine, is likely out of commission for ...

VIDEO: Baby Bertha? Bechtel builds mini tunnel-boring machine using 50,000 Legos

VIDEO: Baby Bertha? Bechtel builds mini tunnel-boring...

Posted by Wayne Grayson on Feb 10, 2014

The Lego Movie, which hit theaters this past weekend, is fantastic. But we wish the folks who made it had ...

VIDEO: Claw and shear painted like a Seahawk rip apart a Ford Bronco in a spot-on Super Bowl prediction

VIDEO: Claw and shear painted like a Seahawk rip apart...

Posted by Wayne Grayson on Feb 05, 2014

"This is a special occasion." That's why Lisa Parberry, who co-owns the Scrap-It recycling center in Ferndale, Washington, says she and ...

Tunnel-boring machine Big Bertha moves forward 2 feet in test run to see if blockage is fully removed

Tunnel-boring machine Big Bertha moves forward 2 feet...

Posted by Wayne Grayson on Jan 31, 2014

After nearly two months of downtime caused by a steel pipe stuck in her teeth, Big Bertha, the world's largest ...

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 ...

Unstoppable Force, Immovable Object: Seattle’s Big Bertha halted by mystery object

Unstoppable Force, Immovable Object: Seattle’s...

Posted by Wayne Grayson on Dec 19, 2013

Has Big Bertha met her match? She has, at least for the time being. The world's largest tunnel-boring machine was recently ...

Is green building movement enough to revive use of heavy timber for framing in construction?

Is green building movement enough to revive use of...

Posted by Wayne Grayson on Sep 23, 2013

"Green building" and the aim to reduce carbon emissions in the construction of a building are fine goals. But is ...

Subway expansion in Delhi to set record with simultaneous use of 34 tunnel-boring machines

Subway expansion in Delhi to set record with...

Posted by Wayne Grayson on Jun 28, 2013

Seattle might have the world's largest tunnel-boring machine, but Delhi, India will soon have a record-setting host of the machines ...

Big Bertha, world’s largest tunnel-boring machine, lowered into starting position in Seattle

Big Bertha, world’s largest tunnel-boring...

Posted by Wayne Grayson on Jun 05, 2013

With the digging of the Washington State Route 99 tunnel in Seattle scheduled to start in July, the Washington State Department of ...

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