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tunnel boring machine
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, ...
As Bertha visits the dentist, a look at how this machine digs and builds the SR99 tunnel at the same time (VIDEO)
Bertha, the world's largest and perhaps most beleaguered tunnel boring machine, has been halted deep below the streets of Seattle ...
Bertha will soon begin digging below the viaduct its path will replace
The world's largest tunneling machine will soon begin its dig beneath the Alaskan Way Viaduct in Seattle, its first ...
Bertha is nearly ready to start tunneling again (VIDEO)
The massive tunnel-boring machine that's been sidelined in Seattle for two years could be back to boring by New ...
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Connected Keypad Adds Security to Job Sites
Ask anyone in the construction business how confident they feel leaving their equipment on job sites, and you’ll probably get…
Bertha delayed again; won’t restart drilling until late December
The Seattle Tunnel Partners have once again delayed the restart of drilling for the State Route 99 tunnel, with Bertha not ...
Big Bertha wakes from one-year nap, begins to chew her way into repair pit
For the first time in more than a year, Big Bertha actually bored. According to a report from the Seattle Times, the world's ...
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 ...
Tunnel-boring machine Big Bertha shut down for “months” due to complexity of needed repairs
Washington State Department of Transportation officials say Big Bertha, the world's largest tunnel-boring machine, is likely out of commission ...
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 ...
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 ...
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 ...
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 ...
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Caterpillar creates two new divisions as three VPs step aside
Discovery of human remains halts $2.9 million bridge project in Minnesota
Cummins developing fully-electric powertrain: “We are not just a diesel company”
Spy shots: Is Ford working on a Ranger Raptor?
U.S.-made, Cat-powered Monterra 4×4/6×6 cabovers are reset Army trucks aimed at construction
Small trench, big disaster
GO TO SAFETY WATCH
U.S.-made, Cat-powered Monterra 4×4/6×6 cabovers are reset Army trucks aimed at ...
by Tom Quimby
ELD Mandate: As contractors scramble to comply with electronic logging, others ...
by Equipment World Staff
JCB’s 16C-1, 18Z-1 and 19C-1 mini excavators bring new designs, lots ...
by Wayne Grayson
Test Drive: Volvo’s new VNR tractor with 38 tons of concrete ...
by Jason Cannon
Cat tax whistleblower could get IRS reward of $600 million
by Wayne Grayson
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