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Cross River Rail contractors appointed
04 April, 2019
Australia – The Queensland Government has announced the major contractors for the Cross River Rail project. The AUD 5.4bn (USD 3.86bn) scheme will see the construction of a 5.9km twin tunnel under the Brisbane River and central business district. Under the current reference design, the diameter is approximately 7m.
SR99 TBM makes breakthrough
06 April, 2017
US – A year ago, SR 99 tunnel crews were about to face their biggest challenge: a trip beneath the Alaskan Way Viaduct they were working to replace. On April 4, with the viaduct and more than 9,270ft of new tunnel safely behind them, there was nothing left to face but daylight as the SR 99 TBM broke through near Seattle Center.
Tunnelling completed on Northgate Link LRT
08 September, 2016
US - The TBM finishing the last drive on Seattle’s Northgate Link LRT project has reached University of Washington station on September 2.
Northgate Link TBM1 to finish final drive
05 May, 2016
USA – Sound Transit’s tunnelling contractor, Jay Dee/Coluccio/Michels (JCM) joint venture will finish its remaining Northgate Link tunnel drive, of six, with TBM #1, the transit authority announced April 29.
Bay Tunnel scoops award
15 February, 2016
USA – The Bay Tunnel project has been named the 2015 American Society of Civil Engineers (ASCE) Region 9 Outstanding Water Project. The 8km-long, 4.6m id tunnel was brought into service in October 2014, well ahead of an original 2015 schedule.
Seattle sees more milestones on LRT project
10 November, 2015
USA - One of the TBMs bored through the wall of Sound Transit’s future U District light rail station on Friday, November 6, completing the third segment of the twin 3.5-mile (5.6km) tunnels that will serve light rail trains from Northgate Mall to the University of Washington starting in 2021.
STP says tunnelling starts in November
23 July, 2015
USA - Seattle Tunnel Partners (STP) submitted a new schedule to Washington State Department of Transportation (WSDOT), the client announced on July 17, with tunnelling expected to resume in late November. The
Steel pipe deemed DSC in Seattle’s mega tunnel
12 May, 2015
WASHINGTON - A dispute review board made its recommendation May 3 that the steel casing encountered by the TBM excavating the SR99 Replacement Tunnel in Seattle in December 2013 is a Differing Site Condition (DSC).
SR99 TBM rescued
01 May, 2015
USA - Seattle Tunnel Partners (STP) completed the lifting process to remove the 57ft (17.4m) diameter cutterhead and main drive unit of the TBM mining the SR99 replacement tunnel on March 31, the Washington State Department of Transportation (WSDOT) announced.
Construction for Alaskan Way shaft walls off schedule
01 August, 2014
USA - Seattle Tunnel Partners (STP) announced on July 28 that building the underground walls of the circular pit creating access to repair the TBM will take longer than anticipated, according to the Washington Department of Transportation (WSDOT).
Hitachi fly in for Seattle TBM fix
25 February, 2014
Seattle Tunnel Partners (STP), the design-build contractor for the Alaskan Way Viaduct replacement tunnel in Seattle, will dig an access shaft to repair or replace the TBM seal. Client Washington State Department of Transportation (WSDOT) said Friday experts from TBM manufacturer Hitachi-Zosen were flying from Japan to finalize the repair plan.
Students asked to name world's largest TBM
01 November, 2012
Washington State Department of Transportation (WSDOT) has asked students in the state aged up to age 18 to find a new name for the State Route 99 TBM, which is currently under construction in Japan.
First U220 breakthrough
03 April, 2012
Breakthrough was reached on the first bore of the U220 University Link Light Rail in Washington, D.C., US.
Hitachi Zosen signs Alaskan Way tunnel contract
18 October, 2011
WSDOT moves forward on Alaskan Way tunnel
25 August, 2011
Seattle votes to build tunnel
19 August, 2011
Hitachi Zosen TBM to excavate Alaskan Way tunnel
18 July, 2011
Third TBM to launch on Seattle light rail tunnel
16 June, 2011
Tunnelling gets underway on Bangalore Metro
23 May, 2011
Tunnelling starts on Seattle light rail line
19 May, 2011