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The World's Largest Tunnel-Boring Machine Must Be Saved

Sep 15, 2014 ... You're digging along, everything fine, the machine's five-story maw about to chew ... rumors of cost and delay on the $1.35 billion tunnel component of an even ... Seattle's tunnel wouldn't be very long—just 1.7 miles of it bored ...

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Tunnel Machine Set To Dig Under Seattle, But It's Not Bertha | KUOW ...

Apr 28, 2014 ... A tunnel machine is set to resume digging beneath the streets of Seattle ... of Bertha, is set to dig a light rail tunnel 3.6 miles from Northgate to Husky ... to start tunneling," Chris Dixon, head of the project for Seattle Tunnel ... Department of Transportation to pay $188 million in extra costs, or "change orders.

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Delta Tunnel Planners Should Learn From Seattle's Expensive Goof ...

Nov 2, 2016 ... The Seattle Tunnel, a single tunnel, will eventually be just 1.7 miles long. ... (The Delta Tunnels would have a much higher cost, starting at $17 billion ... STP had an $80 million tunnel-boring machine nicknamed "Bertha" built ...

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Watch: Flying tour of Seattle tunnel -

Oct 20, 2017 ... WSDOT takes you on a drone tour of the state Route 99 tunnel that will eventually ..... machine complete roughly 1,437 feet of the nearly two-mile tunnel. .... largest tunnel boring machine began digging, WSDOT and Seattle Tunnel ..... the initial costs projected for the tunneling portion of the overall project.

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| Seattle's tunnel machine Bertha breaks through nearly 4 ...

Apr 5, 2017 ... Seattle's tunnel boring machine that's been digging beneath the city for the ... tunnel reached the end of its 1.75-mile journey Tuesday, nearly four years .... for the cost overruns on the tunnel instead of the state of Washington.

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Beleaguered $2B Seattle tunnel may see fall opening | Construction ...

Jan 16, 2018 ... A revised schedule from contractor Seattle Tunnel Partners (STP) ... its tunnel boring machine (TBM), Bertha, hit a steel pipe, the location of ... Back then, Horodniceanu said the project would cost about $1 million per mile, ...

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Big Bertha, world's largest tunnel-boring machine, arrives in Seattle

Apr 4, 2013 ... Replacing the viaduct will cost a total of $3.1 billion. ... The $80 million Bertha traveled 5,000 miles from Osaka, Japan where she was built by Hitachi Zosen. The owner of the tunnel-boring machine is Seattle Tunnel Partners, ...

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Steel pipe in the way of Seattle tunnel-boring machine Big Bertha ...

Jan 3, 2014 ... Steel pipe in the way of Seattle tunnel-boring machine Big Bertha ... will cost, or how it will affect the long-term schedule of the 1.7-mile tunnel ...

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Seattle's tunnel boring machine Bertha reaches end of long, troubled ...

Apr 4, 2017 ... Bertha, the machine digging a 1.75 mile tunnel under Seattle to ... SEATTLE — With a cloud of dust, Bertha — Seattle's tunnel boring machine — reached the end of her ... Who pays for Bertha's $149 million cost overruns?

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Washington reveals 'smart' features of $2B Seattle tunnel ...

Mar 29, 2018 ... All in all, the two-mile tunnel boasts 95 miles of electrical wiring; ... years due to a breakdown of the tunnel boring machine (TBM) called Bertha and a ... a $2 million study to determine the feasibility and cost of a tunnel through ...

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The High-Tech, Low-Cost World of Tunnel Building - WSJ

Apr 24, 2016 ... Boring machines for London's new Crossrail rail link are digging 13-mile-long tunnels that cross beneath the city center. Photo: Crossrail.

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Hard grind: The epic journey of the world's biggest tunnel boring ...

Apr 30, 2017 ... Bertha is the largest tunnel boring machine ever built(Credit: WSDOT) ... State Department of Transportation (WSDOT) and Seattle Tunnel Partners – a .... was completed, the walk back for lunch would have been almost two miles. ... All this while dealing with mounting costs, union problems, political battles, ...

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Bertha's big breakthrough is here: Seattle tunnel machine will emerge ...

Apr 3, 2017 ... After mining through more than 9000 feet of Seattle underground, and rebounding ... The disassembly pit where the SR 99 tunneling machine Bertha is set to ... so many bells and whistles on this TBM (tunnel boring machine) that you don't ... The cost of the entire project to replace the viaduct — tunneling, ...

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Bertha (tunnel boring machine) - Wikipedia

Bertha was a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the ... The machine itself cost $80 million and is owned by Seattle Tunnel Partners, the project contractors. ... The machine began excavation of the 1.7-mile-long (2.7 km) route on July 30, 2013, with completion of the bore scheduled in 14 ...

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Digging It: As Bertha bores, tunnel geeks everywhere will be watching ...

Jul 18, 2013 ... The price of putting out Western wildfires · Opinion ... Seattle's tunneling machine is state of the art ... for nine long, cold, wet, hard rock miles below the floor of Massachusetts Bay. ... I marveled to my guide Greg Hauser, Deputy Project Manager for Seattle Tunnel Partners, "I've never seen anything like this.".

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Seattle Tunnel - Curbed Seattle

For Sale in Seattle · For Rent in Seattle · Development News · Architecture ... Watch the layers of the new Seattle downtown tunnel fill in Bertha's pit ... pit after digging the two-mile-long State Route 99 tunnel, tunnel-boring machine Bertha is ... The tunnel-boring machine that dug the Alaskan Way Viaduct replacement tunnel ...

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Seattle Restarting Bertha, the Broken Tunnel Machine | Fortune

Dec 3, 2015 ... Stuck underground for years, Seattle's Bertha tunnel boring machine will soon tremble to life once ... It would travel 1.7 miles beneath 158 downtown structures (that'll be ... Contractor Seattle Tunnel Partners, as part of efforts to establish ... Cost overruns on the project were nearly $20 billion– which won't be ...

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With final piece of roadway in place, the SR 99 tunnel ... - Curbed Seattle

Mar 27, 2018 ... It's been almost a year since Bertha the tunnel-boring machine completed its job drilling the ... As Seattle Tunnel Partners crews finish the scope of the contractor's work, the ... The tunnel's construction includes 95 miles of electric wiring, 21 miles of ... The current estimated cost of the project is $3.2 billion.

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The end is near for Bertha: After nearly 2 miles in 4 years, tunnel ...

Mar 31, 2017 ... Bertha is on pace to emerge into daylight in a few days and push its way into a pit ... The celebrity boring machine's arrival near Seattle Center, some 29 months ... in 2010 that Seattle residents would get stuck paying cost overruns, ... Seattle Tunnel Partners (STP) and drilling-machine builder Hitachi Zosen ...

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Troubles with India's tunnel machine – also built by Bertha-maker ...

Mar 18, 2015 ... The cutter head of a tunnel-boring machine is broken, resulting in a government ... 15, Seattle Tunnel Partners had requested access to $210 million more from ... Completion of the 1.7-mile tunnel, which will replace the Alaskan Way ... But the north-south phase is months behind and the costs are starting to ...

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Bertha – The Tunnel is Finished, but Her Legacy Continues | ACS ...

Sep 27, 2017 ... The Tunnel Boring Machine ("TBM") known as "Bertha," built by Hitachi Zosen ... Seattle Tunnel Partners ("STP") has a contract with the Washington State Department of Transportation (WSDOT) to dig the two-mile tunnel which is now complete. ... rent, and engineering costs due to the delay of $120 million.

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What Could Possibly Go Wrong - The Stranger

Jul 8, 2010 ... It will cost an estimated $4.2 billion to replace the dilapidated .... "The tunnel boring machines were stuck... a total of 12 times in 40 ... Seattle's tunnel will go about 120 feet deep and will go below the water table near Pioneer Square. ..... "But for a two-mile-long stretch of what will be a not-very-well-used ...

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World's largest tunnel-boring machine finally breaks through

Apr 4, 2017 ... SEATTLE — The world's largest tunnel-boring machine broke through a concrete ... that would collapse under the weight of its ambition and mounting costs. ... Bertha has finally capped its 1.75-mile (3-kilometer) journey, which the state ... Seattle Tunnel Partners and its insurance companies sued in 2015, ...

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Seattle tunnel tolls need to be kept low so drivers don't avoid using it ...

Apr 22, 2018 ... ... the massive tunnel-boring machine, is shown ready to begin drilling the tunnel to ... A few miles away, thousands of drivers pay express-lane tolls as high as ... a penalty of sorts for Seattle demanding a premium-cost tunnel.

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The Spin Zone: Bertha Maker Hitachi Zosen Bites Back | Seattle ...

Last April, as Seattle's tunnel-boring machine, Bertha, closed in on ... of Washington Station at Husky Stadium and is now drilling the 3.6-mile tunnel to ... Frost suggested Hitachi Zosen temporarily bear the cost of repairing the machine, while ...

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