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Alaskan Way Viaduct
Bertha’s repairs push Seattle’s SR99 tunnel $200 million over budget. And it could get worse
Following two years of costly repairs and downtime, Bertha, the world's largest tunnel boring machine, is $223 million over budget, ...
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 once ...
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 Year's. The ...
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 expected ...
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Crews prepare soil for Bertha to begin tunneling again
One of the last steps to getting Big Bertha back to boring beneath Seattle is underway. The Washington State Department of ...
PHOTOS > Big Bertha gets her head together: How to repair the world’s largest tunnel machine
With the final repairs having been made earlier this summer and Big Bertha finally picked back together underground, Washington State ...
Damage to Big Bertha worse than previously thought
Now that crews are well into the process of dismantling her front-end for necessary repairs, it's clear that damage to ...
Did Seattle’s SR 99 tunnel really require Big Bertha? Indeco argues breakers are the answer
Tunnel boring machines such as Big Bertha, the 7,000-ton machine sidelined after a massive fail under the streets of Seattle, ...
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 largest ...
VIDEO: Watch time-lapse of Highway 99 construction
The Washington State Department of Transportation was kind enough to release the following time-lapse video of construction on Highway 99. ...
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 ...
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 ...
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VIDEO: Massive earthmover tire explosion shows why you should cage 'em before you inflate 'em
Cummins hit with $60M lawsuit by FCA over defective emissions system in Ram pickups
VIDEO: Crews demo century-old Virginia St. Bridge, construct and move new one into place (Time-lapse)
U.S. highways are shifting to alternative interchange designs
Ford suspends production of F-150, other models amid sales drop
Unsafe surroundings: Unrecognized hazards could cause trouble for you – or for someone else
GO TO SAFETY WATCH
Hoping to impress ‘low-spec’ skeptics, LiuGong steps up its game with ...
by Tom Jackson
How Volvo CE is engineering a quarry run by electric loaders ...
by Marcia Gruver Doyle
Caterpillar CEO Doug Oberhelman to retire next year; Umpleby tapped as ...
by Wayne Grayson
Caterpillar intros M315F, M317F wheeled excavators with tool carrier, compact radius ...
by Wayne Grayson
Three views on the past, present and rapidly evolving future of ...
by Tom Jackson