More From tunnel-boring machines

PHOTOS: Amazing images of subway construction in the man-made caverns below New York City

PHOTOS: Amazing images of subway construction in the...

Posted by Wayne Grayson on Apr 07, 2014

Back in June we showed you a handful of pictures from deep below New York City. And while they depicted ...

Before Bertha repairs begin, archaeologists will test soil for artifacts

Before Bertha repairs begin, archaeologists will test...

Posted by Wayne Grayson on Mar 25, 2014

Before workers in Seattle begin to dig a 12-story pit to make the necessary repairs to get the world's largest ...

Lady Bird is installed below Washington D.C. before getting to work last year.

Lady Bird is the 1,300-ton tunnel-boring machine...

Posted by Wayne Grayson on Mar 19, 2014

Each year in Washington, D.C., about 2 billion gallons of raw sewage is dumped into the Potomac River, the Anacostia River ...

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, ...

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 ...

Another mystery overheats, halts tunnel-boring machine Big Bertha once more

Another mystery overheats, halts tunnel-boring machine...

Posted by Wayne Grayson on Feb 04, 2014

The Washington State Department of Transportation officials in charge of the world's largest tunnel-boring machine have another mystery on their ...

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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