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Metro unveils Purple Line phase 2 TBMs
21 June, 2019
US - The Los Angeles County Metropolitan Transportation Authority (Metro) joined elected officials and community members in Century City for a ceremonial naming and unveiling of its second set of TBMs that will dig twin subway tunnels between Beverly Hills and Century City, on Monday. Subway tunnelling is expected to begin in early 2020.
Metro board approves Purple line contract
28 May, 2019
USA – The Los Angeles County Metropolitan Transportation Authority (Metro) board approved a USD 1.36bn contract with Tutor Perini/O&G to build stations, track, systems and testing for Section 3 of the Purple Line Extension between Century City, the Wilshire/Westwood Station and the Westwood/VA Hospital Station.
ACEC names SR 99 Tunnel the 2019 "Grand Conceptor"
10 May, 2019
US – The State Route 99 tunnel has been honored with one of the nation’s top engineering achievement awards for 2019: The 2019 Grand Conceptor Award from the American Council of Engineering Companies, the Washington State Department of Transportation (WSDOT) announced May 8.
Under the dam
26 October, 2018
Paola De Pascali spoke with Tony Dell, lead geotechnical engineer at SNC-Lavalin to discuss the excavation of the John Hart powerhouse and tunnels, including an unexpected soft ground surprise
Frontier-Kemper still the lowest in LA County tunnel re-bid
04 October, 2018
US – Tutor Perini Corporation announced October 3 its subsidiary, Frontier-Kemper Constructors, has been identified by the Los Angeles County Department of Water and Power as the low bidder for the USD 121M River Supply Conduit Improvement Upper Reach – Unit 7 Project (RSC Unit 7). The project was bid earlier this year, with Frontier-Kemper providing the low bid. The customer subsequently opted to re-bid the project, and Frontier-Kemper was again designated as the low bidder.
Metro to award Purple Line work to Frontier-Kemper/Tutor Perini JV
22 June, 2018
Tutor Perini Corporation announced that the Frontier-Kemper/Tutor Perini Joint Venture has received a notice of intent to award a contract from the Los Angeles County Metropolitan Transportation Authority for the Purple Line Extension Section 3 Tunnels Project. The contract value is anticipated to be approximately USD 410M.
Los Angeles breaks ground for Purple Line Phase 2
02 March, 2018
US – Los Angeles County Metropolitan Transportation Authority (Metro) held a ground breaking ceremony on February 23 for the second phase of its Purple Line extension Purple Line Phase 2, which will add 2.6-miles (4.2km) of new subway service to downtown Beverly Hills and Century City.
Rio Tinto issues NTP on second Kemano tunnel
02 January, 2018
Canada – A Frontier-Kemper Constructors and Aecon Group JV announced December 19 it has received notice to proceed from Rio Tinto for a contract valued at approximately CAD 337M (USD 274M) to complete the construction of the remaining 7.6km section of a 16km second tunnel at the Kemano Generating Station in British Columbia.
Tutor-Perini-led JV to build phase two of LA’s purple line
01 February, 2017
US – The Los Angeles County Metropolitan Transportation Authority (Metro) board of directors awarded a USD 1.37bn contract to the joint venture team of Tutor Perini/O&G to build the second section of the Purple Line Extension to Century City.
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
Seattle start up
18 February, 2016
Repairs are finished for giant TBM “Bertha". Patrick Reynolds reports on the two-year-long process
MTA approves final major contract for East Side Access Manhattan Caverns
05 February, 2016
USA - The Metropolitan Transportation Authority (MTA) Board approved the final major contract for the East Side Access project, which will build and finish four platforms and eight tracks for the new Long Island Rail Road (LIRR) terminal some 100ft below Grand Central Terminal, it announced on January 27.
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.
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.
Crossing the tracks
27 June, 2014
San Francisco’s Central Subway moves below rail lines, utilities and more, Desiree Willis of Robbins reports.
Court rules in favor of Perini-led JV in Boston Big Dig dispute
10 June, 2014
Tutor Perini announced on June 6 that its Perini-Kiewit-Cashman (PKC) Joint Venture recently prevailed in a court decision in its long-standing dispute with the Massachusetts Department of Transportation (MassDOT) regarding the Central Artery/Tunnel Project in Boston. Tutor Perini is the managing partner in the joint venture with a 56 per cent interest.
Caldecott Fourth Bore tunnel wins award
29 May, 2014
Tutor Perini Corporation announced on May 26 that its subsidiary, Tutor-Saliba Corp., recently received the Project of the Year Award from the California Transportation Foundation for the Caldecott Tunnel Fourth Bore Project.
On the high road
19 March, 2014
Roadheaders, the underdog of the tunnelling industry, have secured their place as an economical and variable excavation tool, ideal for short drives and changing ground. Technical journalist Rhian Owen examines the principles.
In the nick of time
19 March, 2014
As the Hudson Yards development moved toward construction, a small window of opportunity for new rail infrastructure connecting New Jersey to Manhattan began to close. Nicole Robinson looks at the tunnel box project securing the right of way for potential tunnels under the Hudson River.