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sr 99

Jury Rules in Favor of Washington State DOT in SR 99 Case
TBM Staff
December 16, 2019
Read Article
News
Double-deck Viaduct Demolition Complete on Seattle’s Waterfront
September 24, 2019
News
SR 99 Project Wins ACEC’s Top Engineering Award
May 8, 2019
News
SR 99 Tunnel Construction Video Collage
February 21, 2019
Cover Stories sr 99
Retracing Bertha’s Journey
February 13, 2019
News
SR 99 Tunnel Now Open to Traffic

The party was over, but after more than 100,000 people spent the weekend saying goodbye to the viaduct and hello to the ...

February 4, 2019
News
SR 99 Tunnel Set to Open Monday, Feb. 4

It’s almost here. After nearly three weeks of the closure to realign the SR 99 highway away from the old viaduct, ...

January 31, 2019
News
End of the Road for Alaskan Way Viaduct

If the rain holds off, drivers on the SR 99 Alaskan Way Viaduct could be treated to one final sunset drive tonight, Frid...

January 11, 2019
News Roadway work
SR 99 Tunnel Reaches Substantial Completion

Seattle Tunnel Partners, the joint venture building the SR 99 tunnel in Seattle, has achieved substantial completion, th...

October 31, 2018
News sr 99 tbm
BASF Introduces MasterRoc SLF 50 Soil Lubricating Foam

BASF recently introduced MasterRoc SLF 50, a new generation soil lubricant that improves performance and increases tunne...

July 18, 2018
News
Final Piece of Bertha Removed from SR 99 Tunnel

Disassembly of Bertha, the world’s largest tunneling machine, is now complete. On Aug. 23, crews from Seattle Tunnel P...

August 23, 2017
News sr 99 basf
BASF Plays Role in SR 99 Tunnel Construction

History is being made on Seattle’s two-mile-long SR 99 tunnel under downtown, and BASF is playing a small but signific...

May 11, 2017
Featured Stories Bertha’s cutterhead emerges into the reception pit on April 4, 2017.
SR 99 TBM Emerges into Reception Pit

Bertha, the 57.5-ft diameter TBM building the S...

April 4, 2017
Featured Stories sr-99-tunnel
SR 99 TBM Nears Breakthrough

Bertha, the TBM mining the SR 99 tunnel in Seattle, was 219 ft from its end point as of March 27, according to the Washi...

March 28, 2017
News sr 99
SR 99 TBM Gears Up for Final Stretch

Seattle Tunnel Partners has temporarily stopped mining to prepare Bertha, the SR 99 tunneling machine, for the final 1,0...

March 3, 2017
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