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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 …
Watch Bertha, the world's largest tunnel boring machine ...
From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on Tuesday, completing a final push in a years-long effort to create space for a new highway beneath the city.
Big Bertha completes Seattle tunnel dig, next …
After four years of moving -- and sitting broken for a while -- underneath downtown Seattle, the world's largest tunnel-boring machine on …
How did we get here? A look back on Seattle's tunnel ...
The Highway 99 tunnel contractors, Seattle Tunnel Partners (STP), contend the pipe impact damaged Bertha. Hitachi Zosen, which manufactured Bertha in Japan, says the giant drill would have otherwise made it all the way to South Lake Union as built.
| Seattle's tunnel machine Bertha …
It's official - Bertha has broken through! Seattle's tunnel boring machine that's been digging beneath the city for the State Route 99 tunnel reached the end of its 1.75-mile journey Tuesday, nearly four years after it embarked on the job. Just before 10 a.m., Bertha pierced the cement wall of the ...
Big Bertha, world's largest tunnel-boring machine, arrives ...
The "Big" in Bertha's name isn't there for the catchiness. It's there because it's apt. With a 57-foot diameter and a length of a football field, …
Seattle Tunnel - Curbed Seattle
Nearly four months after completing its journey into the disassembly pit after digging the two-mile-long State Route 99 tunnel, tunnel-boring machine Bertha is half-dismantled.
Watch: Bertha breaks through Seattle waterfront tunnel ...
Governor Jay Insee speaks with Dragados workers after Bertha, the world's largest tunnel boring machine, finally broke through the north end of the Seattle waterfront tunnel, Tuesday afternoon, April 4, 2017.
Big Bertha: Mystery object blocks Seattle's tunnel drill …
The world's biggest tunnel boring machine, named after Seattle's first female mayor, has been brought to a halt
Seattle tunnel, among world's biggest, takes step …
Apr 04, 2017 · Bertha, one of the world's largest tunnel boring machines, emerged north of downtown Seattle on Tuesday.
Bertha's big breakthrough is here: Seattle tunnel machine ...
The disassembly pit where the SR 99 tunneling machine Bertha is set to emerge in Seattle on Tuesday. (GeekWire Photo / Kurt Schlosser) After mining through more than 9,000 feet of Seattle underground, and rebounding from a lengthy breakdown and repair, Bertha the tunneling machine is poised to bust through its final obstacle on Tuesday.
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big bertha tunnel boring machine seattle. Our Recent Industrial News. Breitbart TV - Latest News | Breitbart. Breitbart TV is the home of the hottest video on ...
'Big Bertha' Drilling Machine Is Stuck « CBS Seattle
Dec 09, 2013 · Seattle's tunnel-boring machine, known as 'Big Bertha,' hit an obstruction and is stuck
Inslee Says 'Big Bertha' To Resume Drilling Seattle Tunnel ...
"Big Bertha" should soon get back to work digging a nearly two mile tunnel to replace Seattle's Alaskan Way Viaduct. The massive drilling machine has been idled since last month because of a labor dispute on Seattle's waterfront.
Bertha | The Seattle Times
Read more about the technical challenges and rising costs of the Highway 99 tunnel project, and the successes and travails of Bertha, the biggest-ever boring machine.
Hard grind: The epic journey of the world's biggest tunnel …
On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger was tasked with the challenge of building a tunnel large enough to carry four lanes of motor traffic under the heart of Seattle.
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Big Bertha -- world's largest tunnel boring machine -- facing big ... 25 Dec 2013 ... Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill.
Alaskan Way Viaduct - Follow Bertha
For the latest tunnel progress, visit our new tracker page. An abbreviated history of Bertha: July 2013: Began tunneling; April 2017: Tunneling breakthrough; August 2017: Final piece of dismantled machine removed . While Bertha was underground, this page tracked her progress beneath Seattle.
Prosaic Pipe Stymied Seattle's Big Bertha - The …
Jan 04, 2014 · SEATTLE — The unknown object buried beneath this city, big enough to stop the world's largest-diameter tunnel-boring machine in its tracks last month and tantalizing enough in its mystery to set off a cottage industry of wispy romantic speculation, turns out to be an ordinary metal pipe, tunnel engineers said Friday.
Under Seattle, a Big Object Blocks Bertha. What Is …
Dec 20, 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.
Seattle Tunnel Boring Machine -- Bertha Rescue
The effort to replace the aging and elevated Alaskan Way Viaduct in downtown Seattle involved a decade of planning that finally settled on digging a tunnel under the city. Bertha, a 57.5-foot-diameter tunnel-boring machine, was built in Japan and shipped over for the job. Tunneling began in earnest on July 30, 2013.
Bertha breaks through: Watch the tunnel boring machine…
To get to the disassembly pit near Seattle Center, the drill first needs to break through a concrete wall. WSDOT expects that the machine will reach the wall sometime today, and crews will spend the evening prepping Bertha for that last push. It could take several hours for Bertha to dig through the concrete.
big bertha tunnel machine in seattle - …
Big Bertha completes Seattle tunnel dig, next phase of ... Apr 03, 2017 · SEATTLE — Bertha is done digging. After four years of moving — and sitting broken for a while — underneath downtown Seattle, the world's largest tunnel-boring machine on Tuesday reached the end with much fanfare.
Big Bertha, world's largest tunnel-boring machine, arrives ...
... world's largest tunnel-boring machine, arrives in Seattle ... Big Bertha is the world's largest tunnel ... The owner of the tunnel-boring machine is Seattle ...
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