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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.
24 January, 2019
Paola De Pascali talked with the technical director of Lombardi, Alessandro Damiani and Pierfrancesco Redaelli engineer of PAC, about the challenges met during the excavation of a water diversion tunnel in Genoa
James Clark Winner
06 September, 2017
The BTS has recognised the life’s work and contribution of Joseph Gallagher Ltd chairman Joseph Gallagher by awarding him this year’s James Clark Medal. He talks to Keren Fallwell about his career
Balancing the old with the new
21 August, 2017
Creating Thessaloniki’s first ever metro system means striking a balance between preserving historic artefacts and delivering a state of the art public transport system
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.
The big City move
22 March, 2017
TBMs are being built on an ever-larger scale, pushing the limits our congested cities can accommodate. Rhian Owen speaks with two freight forwarding companies about the obstacles they face when machines move through large cities
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.
Big city move
18 August, 2016
TBMs are being built on an ever larger scale, pushing the limits our congested cities can accommate. Rhian Owen speaks with two freight forwarding companies about the obstacles they face when machines through large cities
Seattle Start up
25 May, 2016
repair work for giant TBM “Bertha" finished earlier this year. Patrick Reynolds reports on the two-year-long process
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.
Seattle start up
18 February, 2016
Repairs are finished for giant TBM “Bertha". Patrick Reynolds reports on the two-year-long process
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
San Francisco success
27 May, 2015
The first water passed through the 8kmlong San Francisco Bay Tunnel in October 2014, well ahead of an original 2015 schedule. The project also came in well under budget, Adrian Greeman
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.
San Francisco success
03 February, 2015
The first water passed through the 8km-long San Francisco Bay Tunnel in October 2014, well ahead of an original 2015 schedule. The project also came in well under budget, Adrian Greeman reports.
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).
The Seattle Saga
27 June, 2014
After six months of tunnelling standstill, construction is tarting on an access shaft to repair the TBM mining the SR 99 bore in Seattle, the largest diameter machine in the world. Nicole Robinson explores the machine’s initial journey and downtime.