Engineers are still desperately trying to rescue the world's largest tunneling machine that is stuck ... the boring machine, ... Seattle Tunnel Partners ...
May 07, 2014 · A massive tunneling machine is broken down and stuck underneath Seattle's downtown waterfront -- and fixing the mess could cost taxpayers millions.
Front-End Of Tunnel-Boring Machine Freed From Seattle Pit Engineers have removed the cutter head from the enormous tunneling machine nicknamed Bertha. The malfunctioning part had been stuck for more than a year in a highway project under the city's downtown.
Aug 01, 2014 · The world's biggest tunnel-boring machine, nicknamed Bertha, is awaiting repairs, and getting it going again will be an engineering feat in itself.
Bertha, the world's biggest tunnel boring machine, has been stuck under Seattle since Dec. 6, 2013.
The tunnel-boring machine gets stuck . 2. ... which means WSDOT Seattle Tunnel Partners has to dig a 120-foot hole to reach the machine.
Dec 21, 2014 · The massive tunnel-boring machine stopped work on the 2-mile tunnel in December 2013 after going about 1,000 feet, and the massive machine that's stuck underground needs repairs before drilling can resume.
Bertha got stuck for a year under Seattle ... contractor Seattle Tunnel ... Crews struggled for weeks to reach the object that was blocking the boring machine, ...
It's not uncommon to see damaged seals or bearings on tunnel-boring machines—WSDOT even put in its design-build contract that Seattle Tunnel Partners needed to have a spare $5 million bearing on hand in case of a problem with the original.
The SR 99 Alaskan Way Viaduct, an elevated concrete structure built in the 1950s and vulnerable to earthquakes, is being replaced with a 1.7-mile tunnel running beneath downtown Seattle.
The SR 99 tunneling machine, nicknamed Bertha, ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel ...
Apr 03, 2017 · Bertha has broken through. After nearly four years underground, Seattle's beleaguered boring behemoth clawed its way into daylight yesterday, leaving a 1.7-mile tunnel behind it.
Although the tunnel boring machine known as "Bertha" is at a standstill, work is still underway to replace Seattle's Alaskan Way Viaduct.
The Associated Press The Transportation Department says help is on the way for the massive machine Bertha that became stuck last month while boring a tunnel under downtown Seattle.
Dec 08, 2013 · Seattle's tunnel-boring machine became stuck underground Friday, and still wasn't moving as of Monday.
Dec 10, 2013 · It will take until Friday at least for the Seattle Tunnel Partners contracting team to identify the object and decide how to proceed.
For more than a year, Seattle's ambitious urban planning efforts have been stymied by a serious problem -- the world's largest tunnel-boring machine has been stubbornly stuck beneath the city.
The Washington State Department of Transportation is hailing this week as a milestone in the unfortunate saga of Bertha, the $80 million tunnel boring machine that's been stalled for two years beneath downtown Seattle.
Why Seattle's Huge Tunnel-Boring Machine Is Still Stuck A year after Bertha got stuck, plans to free the big machine have stalled. And there's another problem.
Bertha, the world's biggest tunnel-boring machine, overheated and quit digging on Dec. 6, 2013. The machine is stuck near Pioneer Square, some 1,083 feet into the 9,270-foot route from Sodo to South Lake Union.
Bertha was a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle.
Stuck in Seattle The Aggravating ... There are even pressure variations between the top and bottom of the boring machine. ... STP decided to buy the tunnel-boring ...
Feb 28, 2014 · Contractors working for the state of Washington are planning a high-stakes operation to rescue Bertha — the world's largest tunneling machine. Bertha is supposed to be boring a 2-mile highway tunnel under downtown Seattle, but it got stuck in December. Bertha is on Seattle's waterfront, between ...
And after then-Mayor Mike McGinn predicted in 2010 that Seattle residents would get stuck paying ... (Ellen M. Banner / The Seattle ... of the tunnel-boring machine ...