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Public tours site of Seattle's 'big dig' - seattlepi.com
https://www.seattlepi.com/local/transportation/article/Tunnel-construction-tour-3845959.php
Sep 07, 2012 · You can only go forward with the machine," explained Chris Dixon, project manager for the joint-venture contractor, Seattle Tunnel Partners. Repairs have to …
Bertha (tunnel boring machine) - Wikipedia
https://en.wikipedia.org/wiki/Bertha_(tunnel_boring_machine)
Bertha was a 57.5-foot-diameter (17.5 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle, Washington, United States. It was made by Hitachi Zosen Sakai Works in Osaka, Japan, and the machine's assembly was completed in Seattle in June 2013.
Contractor ordered to pay Washington state $57M over ...
https://www.seattletimes.com/seattle-news/transportation/contractor-ordered-to-pay-state-over-tunnel-boring-machine-berthas-big-stall/
Dec 13, 2019 · The tunneling machine Bertha breaks into daylight in 2017. A jury has awarded Washington state $57.2 million in damages over delays in the downtown Seattle Highway 99 tunnel …
Get a 360-Degree Tour of Seattle's Gargantuan Tunneling ...
https://www.popularmechanics.com/technology/infrastructure/a25666/bertha-seattle-360-tour/
Mar 14, 2017 · When it is done, the enormous machine will have displaced some 1.5 million tons of dirt underneath the city of Seattle. The new State Route 99 tunnel that Bertha is boring …Author: Jay Bennett
State Route 99 tunnel - Wikipedia
https://en.wikipedia.org/wiki/State_Route_99_Tunnel
The State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel in the city of Seattle, Washington, United States.The 2-mile (3.2 km), double-decker tunnel carries a section of State Route 99 (SR 99) under Downtown Seattle from SoDo in the south to South Lake Union in the north.. Since the 2001 Nisqually earthquake, the replacement of the Alaskan ...
Seattle's tunnel boring machine finishes digging a hole ...
https://www.youtube.com/watch?v=nV_rb6bNGUQ
Apr 04, 2017 · Seattle's boring machine, Bertha, finally emerges after four years. ... Seattle's tunnel boring machine finishes digging a hole under the city ... A 360 video tour of Bertha and Seattle’s SR 99 ...Author: KING 5
Alaskan Way Viaduct - Tunneling
https://www.wsdot.wa.gov/Projects/Viaduct/About/Tunneling
The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: the machine's cutterhead being lowered into the launch pit near Seattle's stadiums). The machine completed its tunneling on April 4, 2017 and was fully dismantled and removed from the tunnel …
Alaskan Way Viaduct - Follow Bertha
http://www.wsdot.wa.gov/Projects/Viaduct/About/followbertha
August 2017: Final piece of dismantled machine removed . While Bertha was underground, this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel progress on a new page. Find the new tunnel progress tracker here
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