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Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million
Four months after crews temporarily stopped excavation on a repair pit for the world's largest tunnel-boring machine due to ground sinkage, ...
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the ...
Excavation stopped on Big Bertha repair pit due to major ground sinkage in area
The latest in a long string of delays to affect tunnel-boring machine Big Bertha has far greater implications than any of the ...
Drilling delays a problem for tunnel-boring machine Big Bertha even as she slumbers below ground
Crews in Seattle are now expected to finish digging a 12-story pit to reach stalled tunnel-boring machine Big Bertha one ...
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Camera gives a live view of construction on Big Bertha’s 12-story repair access pit
Just because Big Bertha is down for nearly a year, that doesn't mean work around the world's largest tunnel boring ...
Lady Bird is the 1,300-ton tunnel-boring machine digging DC’s 13-mile sewer tunnel (PHOTOS, VIDEO)
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
Officials from the Washington State Department of Transportation have announced that in order to repair the world's largest tunnel-boring machine, ...
VIDEO: Baby Bertha? Bechtel builds mini tunnel-boring machine using 50,000 Legos
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
The Washington State Department of Transportation officials in charge of the world's largest tunnel-boring machine have another mystery on their ...
Tunnel-boring machine Big Bertha moves forward 2 feet in test run to see if blockage is fully removed
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
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
Has Big Bertha met her match? She has, at least for the time being. The world's largest tunnel-boring machine was recently ...
VIDEO: Watch as a massive Komatsu PC8000 mining shovel is assembled in this time-lapse
VIDEO: Entire Erques Bridge construction chronicled in beautiful time-lapse
Nikola says its 2,000-hp electric hauler is 100% emissions-free
Cat to end track drill production, intends to sell room and pillar underground mining machine business
With VP Henricks's retirement, Caterpillar cuts more jobs in consolidation of tech, R&D efforts
Unsafe surroundings: Unrecognized hazards could cause trouble for you – or for someone else
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