bertha tunnel boring machine seattle

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

    Apr 03, 2017 · Bertha, the machine digging a 1.75 mile tunnel under Seattle to replace a waterfront bridge with an underground roadway, had just 30 feet of mining left at the beginning of the day Tuesday.

  • 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.

  • Seattle Restarting Bertha, the Broken Tunnel Machine | Fortune

    Stuck underground for years, Seattle's Bertha tunnel boring machine will soon tremble to life once more.

  • Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

    We've covered the saga of the SR99 tunneling machine, better known as Bertha, since it broke down after only drilling though just 52 feet in three days of operation. Now the Seattle tunnel boring machine is finally back on track.

  • king5.com | Seattle's tunnel machine Bertha breaks through ...

    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 ...

  • Reanimating Bertha, a Mechanical Behemoth Slumbering Under ...

    Aug 01, 2014 · SEATTLE — Sometime this fall, a huge vertical shaft lined with 84 concrete pilings, designed to hold back the slurry that defines underground Seattle, will be finished, and a Mr. Fix-It operation unlike any other will begin. The world's biggest tunnel-boring machine, nicknamed Bertha — which ...

  • Seattle's unbelievable transportation megaproject fustercluck ...

    The tunnel-boring machine gets stuck . 2. Our plan to deal with a broken machine is inadequate. 3. ... Also, Seattle Tunnel Partners, which owns Bertha, ...

  • Follow Bertha's breakthrough - The WSDOT Blog

    The tunneling machine Bertha will mine ... Below is footage of Bertha's breakthrough, ... seattle-tunnel-boring-machine-bertha ...

  • 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.

  • 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 ...

  • 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 ... the world's largest tunnel boring machine, ...

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

    Contractors building a highway tunnel under Seattle are preparing to remove the world's largest boring machine so that it can be repaired. The gigantic drill, known as Bertha, stopped working in December 2013 after digging just 1,000ft of its two-mile journey to replace the aging Alaska Way, which was damaged in 2001 by an earthquake.

  • World's biggest tunnel machine Bertha emerges from ... - Autoblog

    Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.

  • Seattle tunnel machine Bertha reaches halfway point — here's ...

    Seattle tunnel machine Bertha reaches halfway ... The receiving pit at the north end of Seattle's SR 99 tunnel ... The tunnel boring machine is said to be ...

  • 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.

  • 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.

  • View from a drone inside the SR 99 tunnel - YouTube

    May 02, 2016 · Alaskan Way Viaduct - Tunnel Boring Machine Animation - Duration: 6:22. ... A 360 video tour of Bertha and Seattle's SR 99 tunnel - Duration: 5:23.

  • Alaskan Way Viaduct replacement tunnel - Wikipedia

    The Alaskan Way Viaduct replacement tunnel is a ... Boring of the tunnel with the world's largest-diameter tunnel-boring machine (TBM) "Bertha ... Seattle Tunnel ...

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

    Dec 24, 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. John Blacksto...

  • Bertha Tunnel Boring Machine Seattle - Image Results

  • 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.

  • Bertha breaks through: World's largest boring machine ...

    The normally sedate city of Seattle sounded more like the set of a science fiction epic today as the world's largest boring machine roared and screeched its way into the open air. The tunnel boring machine, better known as "Bertha" cut through a wall of reinforced concrete in the shadow of the city ...

  • Watch: Bertha breaks through Seattle waterfront tunnel ...

    - The cutter head of the Washington State Department of Transportation's Big Bertha Highway 99 tunnel boring machine is ... breaks through Seattle waterfront tunnel.

  • Seattle viaduct demolition: When it will happen and what to ...

    With Bertha the tunnel-boring machine's job complete, the Alaskan Way Viaduct replacement tunnel's construction is well underway.This means that the viaduct's days are officially numbered.

  • How did we get here? A look back on Seattle's tunnel machine ...

    Bertha's end could be near. The world's largest tunnel-boring machine is on schedule to break into daylight this spring after a tumultuous dig under downtown Seattle that's years behind schedule.

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