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VIDEO: Bertha sees daylight, finishes 1.7-mile boring work for SR 99 tunnel
Sixty-four years after the Alaskan Way Viaduct was first opened to traffic, Bertha, the world’s largest tunnel boring machine, broke ...
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 ...
From our partners
Presented By: Sonetics
Wireless Headsets Versus 2-Way Radios for DOT Crews
Learn the top 6 ways that DOT equipment operators use wireless headsets to improve road safety and communications.
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 ...
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 ...
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John Deere unveils Fixstern: A lightweight vision for the backhoe of the future (VIDEO)
Test Drive: Kenworth’s T880S is a more versatile replacement for the W900S
Cat D8T moves more at less cost with several new options
I-85 collapse: Georgia DOT offering contractor incentives to complete bridge reconstruction in May
Test Drive: 2017 Chevrolet Silverado 2500 4×4’s new Duramax engine brings big punch
Dragged to his death: How to prevent chipper accidents
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Caterpillar will move global HQ to Deerfield, lll., beginning this year ...
by Wayne Grayson
John Deere unveils Fixstern: A lightweight vision for the backhoe of ...
by Marcia Gruver Doyle
Test Drive: Kenworth’s T880S is a more versatile replacement for the ...
by Jason Cannon
Cat D8T moves more at less cost with several new options ...
by Wayne Grayson
Kobelco launches slew of new excavators, improved models
by Don McLoud
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