tunnel boring machine stuck in seattle

Alaskan Way Viaduct - Tunneling

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.

Seattle tunnel-boring machine Big Bertha still stuck ...

Dec 10, 2013 · SEATTLE — The state Department of Transportation and contractors building a highway tunnel under downtown Seattle are trying to find out what has blocked their tunnel-boring machine.

Under Seattle, a Big Object Blocks Bertha. What Is It? - The ...

Dec 19, 2013 · In October, workers walked through the first rings of the highway tunnel being built under Seattle's waterfront toward the boring machine called Bertha.

Fly Through the Massive Tunnel They're Carving Under Seattle

Life has not been entirely kind to Bertha, the largest tunnel boring machine in all of North America. About two years ago, the machine, which measures 57 feet tall and 325 feet long, started excavating a two-mile tunnel under downtown Seattle. Seven months later, it ground to a halt, stuck. It had ...

Front-End Of Tunnel-Boring Machine Freed From Seattle Pit : NPR

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.

tunnel machine stuck in seattle - Roadheaders

America's Biggest Tunnel-Boring Machine Is Stuck Beneath ... What exactly went wrong with Seattle's tunnel boring machine? Five different scenarios WSDOT may face this week.

Bertha repair will take longer — there are lots of broken ...

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 (tunnel boring machine) - Wikipedia

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.

Alaskan Way Viaduct - Follow Bertha

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 ...

Mobotix in Seattle Tunnel Boring Machine - Radius Vision

Mobotix Cams for Tunnel Boring Machine Project Nearly everyone in the Pacific Northwest has heard of Big Bertha – the giant tunnel-digging machine that became stuck under the streets of

Bertha, The Giant Tunnel-Boring Machine Stuck Under Seattle ...

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 end is near for Bertha: After nearly ... - The Seattle Times

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 ...

Massive tunneling machine stuck under downtown Seattle, fix ...

May 07, 2014 · A massive tunneling machine is broken down and stuck ... Massive tunneling machine stuck under downtown Seattle, ... because fixing the tunnel-boring ...

Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done ...

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.

Big Bertha -- world's largest tunnel boring machine -- facing ...

Dec 24, 2013 · Named after one of Seattle's early mayors, ... Big Bertha -- world's largest tunnel boring machine -- facing big Seattle challenge CBS Evening News.

Seattle tunnel machine begins drilling after 2-year break ...

Jan 06, 2016 · Seattle's tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level along the city's waterfront.

Why is Bertha stuck? WSDOT's 5 levels of tunnel-drilling hell ...

What exactly went wrong with Seattle's tunnel boring machine? Five different scenarios WSDOT may face this week. The world's largest tunnel machine, Bertha, is stuck 60 feet beneath Downtown Seattle. The tunnel contractor has drilled down, pumped out and pressurized a gap in front of the machine and ...

Seattle Tunnel Boring Machine -- Bertha Rescue

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.

Seattle tunnel machine stuck 60 feet underground - Puget ...

Dec 08, 2013 · Seattle's tunnel-boring machine became stuck underground Friday, and still wasn't moving as of Monday.

seattle tunnel boring machine stuck

Bertha, The Giant Tunnel-Boring Machine Stuck Under Seattle ... The machine has been stuck beneath the city for over a year, but has dug through 6 feet of soil this week.

Stuck In Seattle | Bloomberg Business - Business, Financial ...

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 ...

Seattle's unbelievable transportation megaproject fustercluck ...

The tunnel-boring machine gets stuck . 2. ... which means WSDOT Seattle Tunnel Partners has to dig a 120-foot hole to reach the machine.

Pictured: The world's most powerful tunnel-boring machine ...

Engineers are still desperately trying to rescue the world's largest tunneling machine that is stuck ... the boring machine, ... Seattle Tunnel Partners ...

America's Biggest Tunnel-Boring Machine Is Stuck Beneath Seattle

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 world's biggest boring machine Bertha is taken out for ...

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, ...

Leave a Message