Presenting SR99 Tunnel behind the scenes documentation

You’re invited to view unique coverage of the building of the Seattle Tunnel from 2014 - 2019. This is a film series of all aspects of Bassetti photography on the job, including all work sites, events and milestones.

JOURNEY FROM LIGHT TO LIGHT - Part Two MINING OPERATIONS

JOURNEY FROM LIGHT TO LIGHT - Part One SEATTLE, EARLY DAYS, BERTHA RESCUE AND RETURN

TBM Magazine presents its February cover story “Retracing Bertha’s Journey”. Publisher / Editor, Jim Rush leads us through the visual story of Bassetti photography Project documentation.

https://tunnelingonline.com/retracing-bertha-journey/

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Catherine Bassetti, Photographer, retains all copyrights to images. Redistribution of images is not permitted. 

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Viewer indemnifies and holds harmless Bassetti Photography against all claims, liability, damages, costs and expenses stemming from the use or display of the images, failure to abide by any restriction regarding the use of the images, or any claim by a third party related to the use of the images.

Warranty and Liability:

These images were made for editorial use and belong to the Photographer under Copyright Law.  It is understood by viewing this content that no model or property releases are attached and Photographer is not responsible for claimed infringement by individuals or entities of any kind. Images are provided "as is" with no warranty regarding the suitability of the image for any purpose. The Photographer is not liable to any person or entity for damages, costs or losses stemming from any usage of images. 

Film soundtrack credit: partial use of “Everybody Relax, I’m Here” by ROZCOL, CC License as below:

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Going Northbound? Enter here

A view of the SR99 tunnel Northbound entry and changing roadways in the southern Sodo district

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THEN and NOW

THEN and NOW

Interior view of the SR99 Tunnel, Seattle, Washington, as seen in Spring 2017 and 2018.  Lower image of newly completed Northbound roadway.

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Celebrating the 1st Anniversary of TBM Bertha's successful drive

April 4, 2018 marks the first anniversary of Bertha's breakthrough at the North Portal site of the SR99 Tunnel in Seattle, Washington. The 57.5ft EPBTBM, built by Japan's Hitachi-Zosen, is the world's largest diameter tunnel boring machine to complete an underground drive. The new tunnel will replace the Alaskan Way Viaduct and provide safe passage along the city's vibrant waterfront adjacent to downtown.

 

 

BERTHA'S LAST DAYS

At 57.5 ft diameter, the sheer size and weight of the tunnel boring machine was too great to salvage from the exit shaft. Over the next four months, crews worked alternating shifts 24/7 to methodically dismantle Bertha piece by piece. 

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SR99 tunnel exit site following the completion of TBM dismantle process, view to south.

SR99 tunnel exit site following the completion of TBM dismantle process, view to south.

THE NEXT PHASE, INTERIOR ROADS

Throughout the tunnel boring over the past year, formwork installation and the building of roadways was underway simultaneously. In December, the dual deck highway now fills the cavernous tunnel from end to end.

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Bertha Breathes! Hole-out on April 4, 2017

Bertha shines at night, entering the receiving pit at the North Portal   ©  2017 Catherine Bassetti Photography, all rights reserved worldwide

Bertha shines at night, entering the receiving pit at the North Portal

© 2017 Catherine Bassetti Photography, all rights reserved worldwide

Crew members celebrate the successful long journey of   Bertha, the world's largest diameter EPB TBM.  Seattle, Wa.

Crew members celebrate the successful long journey of Bertha, the world's largest diameter EPB TBM.  Seattle, Wa.

North Portal Exit site, the receiving shaft for Bertha's successful completion of the 2-mile drive beneath the city of Seattle, April 4, 2017

North Portal Exit site, the receiving shaft for Bertha's successful completion of the 2-mile drive beneath the city of Seattle, April 4, 2017

Mammoet awarded Job of the Year by Specialized Carriers and Rigging Association (SC&RA) May, 2016

RISKY BUSINESS / PROBLEM SOLVED

Mammoet, of global recognition for its innovative solutions to high-stakes obstacles, successfully completed the rescue of the world's largest tunnel boring machine from120ft. below ground. 

"Catherine Bassetti's photography provided us with outstanding documentation of our role in this special project for both our case studies and project videos"   - Theo Kroese, Director of Marketing and Communications, Mammoet, NL
Catherine Bassetti’s photography provided us with outstanding documentation of our role in this special project for both our case studies and project videos.
— Theo Kroese, Director of Marketing and Communications, Mammoet, NL

(Below) Case study and video production by MAMMOET

While the access shaft was being excavated, Mammoet completed the gantry tower and skid base. On March 30th, 2015, the tower gantry raised the damaged cutter drive unit from the shaft in a precision-controlled lift. Using adjustable lifting points to change the lifting position, Mammoet turned the suspended cutter drive unit 90 degrees and installed it onto the repair saddles in a total of 16 hours. 

Once repaired, the lifting operation was reversed and the cutter drive unit was carefully lowered back down into the shaft. Through quick response and innovative on-the-go engineering, Mammoet saved the city of Seattle from further delay and inconvenience.

Mammoet, HItachi and Seattle Tunnel Partners' crews after the successful 16-hour lift of TBM (Bertha) Center Drive Unit.

Mammoet, HItachi and Seattle Tunnel Partners' crews after the successful 16-hour lift of TBM (Bertha) Center Drive Unit.