Site suitability study approved by the Nuclear Regulatory Commission for an underground dump consisting of some 50 parallel tunnels within which radioactive waste from more than 100 commercial, industrial and military sites would rest. Cost estimated at $57.5 billion. Public hearings by the Department of Energy underway until mid-December. Construction could begin by 2005, assuming it gets congressional approval, with first shipments by 2010. Visit www.ymp.gov 49/01.

Cut-and-cover tunnel, 3.5 km-long, proposed along the central waterfront to replace the Alaskan Way viaduct damaged in the 28th February, 2001 earthquake. State of Washington and the city to decide early 2002 on one or more alternatives to undergo environmental study. Bids on a design-build contract would go out in 2005. 48/01. 3.5 km tunnel option to replace the damaged Alaskan Way viaduct backed by the state Department of Transport. This option is also supported by the city of Seattle. From South King to Blanchard Street would be a two-level cut-and-cover tunnel, and from Blanchard to Harrison Street would be a deeper, mined tunnel. The final leg, from Harrison to Roy Street, would be a single-level cut-and-cover tunnel. Cost range $10.5-$11.5 billion. Other options are rebuilding the existing viaduct, at a cost of $3.5 billion, or a new bridge from Holgate to Blanchard streets and then a tunnel from Blanchard to Roy streets. That would cost from $5.8-$6.3 billion. State to prepare environmental analyses of all three options before choosing the final one. 30/02.3.2 km-long bored tunnel, paired with surface street and transit improvements now recommended by local authorities to replace the central waterfront portion of the 2001 earthquake-damaged Alaskan Way viaduct. Visit www.wsdot.wa.gov/Projects/Viaduct/. 08/09.

The following submitters have been short-listed for the Alaskan Way viaduct replacement, now known as SR 99 bored tunnel design-build project, in Seattle, WA. They are: Seattle Tunnel Group (STG) comprising S A Healy/FCC/Parsons/Halcrow; AWV Joint Venture (KBB) comprising Kiewit Pacific/Bilfinger Berger/AECOM; Vinci/Traylor/Skanska (VTS JV) with Arup; Seattle Tunnel Partners (STP) comprising Dragados-USA and HNTB Corporation. Draft version of Request for Proposal (RFP) to be released to Proposers on 26.02.2010. Technical contact is Brian Nielsen of WSDOT. More at www.wsdot.wa.gov/Projects/Viaduct/. For project background visit tunnelbuilder archive us/69. 07/10.

Award of design/construct contract for 2.7 km-long tunnel to replace earthquake damaged Alaskan Way viaduct, value EUR823 million (USD1.09 billion), to Seattle Tunnel Partners jv comprising Dragados USA/HNTB/Tutor Perini/Coluccio/Mowat. Contractor will use 18.46 m-diameter EPB through mix of fill soil, clay, glacial till and boulders at depths to 64 m from Sodo to South Lake Union. More from tunnelbuilder archive us/69. Visit www.perini.com and www.grupoacs.com/index.php/en/c/pressroom_news. 50/10.

FHA approval of initiation of design/construct contract for 2.7 km-long tunnel to replace earthquake damaged Alaskan Way viaduct, value EUR823 million (USD1.09 billion), by Seattle Tunnel Partners jv comprising DragadosUSA/HNTB/TutorPerini/Coluccio/Mowat. Contractor will use 18.46 m-diameter EPB through mix of fill soil, clay, glacial till and boulders at depths to 64 m from Sodo to South Lake Union. More from tunnelbuilder archive us/69. Visit www.perini.com and www.wsdot.wa.gov/projects/viaduct. 38/11.

New Blue Line including eleven stations proposed to run from Arlington County, under the Potomac River and through the center of the District to Robert F. Kennedy Memorial Stadium. Cost estimated at $6.3 billion. 46/01. A jv of The Lane Construction Corp., Slattery Skanska, and Granite Construction has been contracted to design and construct the 5 km Largo extension of the Blue Line Metrorail, for US$218 million. The customer is the Washington Metropolitan Area Transit Authority (WMATA). The double-track line, from the existing Addison Road Station to Largo Town Center in Prince George's County, Maryland, east of Washington, D.C., will feature construction of a double box cut-and-cover tunnel through wooded areas and several street crossings. Opening to traffic in 2005. Visit www.largotowncenter.com and www.wmata.com 12/02.Design-build contract awarded to Jacobs Engineering for the 5 km extension of the Blue Line from the existing Addison Road Station to Largo Town Center. Includes 3.2 km of cut-and-cover route. Scheduled to open for service by 2004. Visit www.largotowncenter.com and www.jacobs.com 21/02.

REQUEST FOR PROPOSAL (RFP), deadline 07/04/2021,  to engage a Construction Manager at Risk (CMAR) for the Yellow Line Tunnel & Bridge Rehabilitation project between Metro’s Pentagon and L’Enfant Plaza Stations. Work will include rehabilitating a steel-lined structure to provide redundant structural support of the existing tunnel, thereby restoring the structural integrity of the tunnel and extending its useful life for a minimum of fifty (50) additional years. The project contains heavy systems work, including the temporary relocation and permanent replacement of existing communication, traction power, Automatic Train Control (ATC), life safety, fiber optics, and other systems.  Structure work will include replacing existing bearings, expansion joints, drainage systems, and dry standpipe systems.  Estimated Project Value USD20M to USD50M.  Estimated Period of operation from 28 to 42 months. Contact WMATA, attn Ms Norie A. Calvert, email nacalvert@wmata.com. For further on the tender, please click here. Ref.n. 810. 12/21.  

Proposed 8 km tunnel to avoid San Clemente seashore on Los Angeles-San Diego high speed rail project to be assessed by the California High-Speed Rail Authority board on 14th November, 2001. Route would run from north of the pier at Avenida Pico following the freeway before reconnecting with existing coastal tracks around San Onofre. Visit www.cahighspeedrail.ca.gov 43/01. The California High-Speed Rail Authority is to commence a $700 million EIS to determine the best route alignment for the 1,100 km-long high speed link between San Francisco and Los Angeles. The railway will have to comply with antiseismic standards and to cross two mountain massifs, requiring a 50 km tunnel. Cost of $25 billion. Visit www.cahighspeedrail.ca.gov 02/02.The California High-Speed Rail Authority and the Federal Railroad Administration (FRA) released a draft environmental impact report and environmental impact statement (EIR/EIS) for the planned 1,130 km high speed line from San Francisco to Los Angeles. Public hearings on the draft environmental report will be scheduled throughout the state beginning in mid-February. Tunnel segments of the alignment are proposed through the mountain passes in Diablo mountain range/Pacheco Pass between south San Jose and the Merced, and the Tehachapi mountains between Bakersfield and Sylmar. Visit www.cahighspeedrail.ca.gov 08/04.A study by Geodata of Italy shows that routing the proposed high speed train through the Antelope Valley would be safer from earthquake hazards and far better serve southern California's transportation needs than the alternative Grapevine route also being considered by the California High Speed Rail Authority (CHSRA). The Antelope Valley route is cheaper, faster to construct and safer to build than the Grapevine option which poses greater earthquake hazard and would cost more.The CHSRA has proposed a high speed train from the Bay Area to Los Angeles in about 2.5 hours. The project would cost an estimated USD35 billion and be the most expensive public works project in US history. Present plans call for Bakersfield to be the last Central Valley station before southern California. The train then would either follow a route through the Antelope Valley, with stops in Palmdale and Sylmar, or down the Grapevine route along the I-5 Freeway and stop in Sylmar before proceeding to Union Station downtown. The Palmdale to Union Station trip would take about 26 minutes. Visit www.cahighspeedrail.ca.gov and www.geodata.it. More in E-News Weekly 17/2004. 17/04.A joint venture involving URS Corp., Hatch Mott MacDonald and Arup won two contracts for engineering and environmental work for California's proposed high speed rail system. The joint venture will do preliminary engineering and environmental analysis for a proposed 310 km segment between Fresno and Palmdale. This six-year contract could be worth USD41 million to URS. The joint venture will do similar work for a proposed 98 km rail line from Los Angeles to Palmdale, which could be worth USD21 million to URS. Read E-News Weekly 16/2007. Visit www.urscorp.com, www.hatchmott.com, www.arup.com, www.cahighspeedrail.ca.gov 18/07.

  Extension to North Shore requires 6.7 m-diameter twin tunnels under the Allegheny River to be mechanically excavated 12.7 m-deep with thick prefabricated concrete segmental lining and waterproof gaskets. Project includes separate underground spur to new convention centre downtown with two-thirds of the total 2.6 km to run underground. Overall project cost estimated at $390 million. Visit www.portauthority.org 42/01. Federal approval is expected within ten weeks for the light rail extension to the North Side. The line would extend from the Gateway Center station under Stanwix Street, tunnel twenty metres under the Allegheny river, rise to a subway station near PNC Park, swing west, emerge above ground and end at a station near Heinz Field. Design will be finished by July 2003 and construction will begin late-2004. The extension could be running from the Golden Triangle to the North Shore by late 2006 at the earliest. Visit www.portauthority.org 10/02. North Shore extension has been placed by the FTA on a federal funding list, positioning it to receive up to 80% of the estimated $390 million construction cost. Dual 22-foot-diameter tunnels will be bored under Stanwix Street to Penn Avenue, where a cut-and-cover will be used to build a new Gateway Center Station and connect the tunnels and Downtown subway. One tunnel will be bored at a time under the Allegheny river. Depth of 25 feet below 10th Street Bypass. Estimated cost of $119 million for the tunnels. The Final EIS has been made available for public review until 3rd June. Project could be ready for opening by spring 2007. Visit www.portauthority.org 19/02.The EIS for the light rail extension project to the North Shore has been approved by the federal government. The plan calls for a 2.6 km extension including twin tunnels, 6.7 m in diameter, under the Allegheny River. Final design to be approved in late August 2002. Bids planned by late 2003, allowing construction to start in 2004. Opening scheduled in 2007. Visit www.portauthority.org 29/02.The North Shore Connector project is a Light Rail Transit extension totalling 2.4 km. The project has been listed as recommended in a federal report, positioning it to receive up to 80% of its estimated USD363 million cost in federal money. The first extension, called Gateway Line, runs from Gateway Center station, underneath Stanwix Street and the Allegheny River. On the North Shore, the line will travel adjacent to Bill Mazeroski Way to a North Shore station near PNC Park. Continuing below grade adjacent to Reedsdale Street, the line will climb to the surface and become elevated near Art Rooney Avenue, connecting to a new Allegheny station along Allegheny Avenue near Heinz Field before terminating near the West End Bridge. Plans include dual tunnels bored under the Allegheny River. The first piece will be boring the tunnels 12 to 14 m below the water, starting on the North Shore. The cut-and-cover method will be used to build the new Gateway Center station and connect the tunnels with the existing network.The Convention Center Line is the second planned extension, 480 m in length, from Steel Plaza station to a new subway station at the David L. Lawrence Convention Center, with an underground station at 11th Street and Penn Avenue.The Port Authority plans to finish final design for the project by June 2004. If the project gets final approval, construction could start late this year or early next year and the lines could be put in service in 2008. Visit www.portauthority.org 09/04.Twin tunnels, each with an approximate length of 670 m, will be built beneath the Allegheny River to carry an extension of the light rail system to the North Shore. Basically, the line will be extended from a new Gateway Center station north under Stanwix Street and then the Allegheny River. It will emerge from underground at a point northwest of PNC Park. The excavated outer diameter is approximately 6.65 m. Lined inner diameter is approximately 5.8 m. The geology will vary across the alignment and includes, but is not limited to various combinations and concentrations of silts, gravels, sands, clays, fills, boulders, shales, limestones, clay stones, siltstones, sandstones, and rock fragments. A shield TBM, either an earth pressure balance or slurry pressure balance machine, will cut through earth and rock.The nine prequalified bidders for the EPBS method are Frontier-Kemper / AECON; Impregilo; Kenny Construction; Kiewit Construction; McNally; Morgan EST; Obayashi; Traylor / Shea; and Traylor / Shea / Wayss & Freytag. The four prequalified bidders for the slurry shield method are Impregilo; Morgan EST; Obayashi; and Traylor / Shea / Wayss & Freytag. Precast gasketed segmental liner initial support with a membrane waterproofing system and cast in place concrete with invert and arch liner. Spoil removal behind the trailing gear will be at the contractor's option. The type of TBM selected will determine the method of spoil removal between the head of the TBM and the end of the trailing gear.The Allegheny River tunnel contract NSC-003 also includes the construction of the launch pit, receiving pit, removal of retaining wall foundations, exploration of a railroad viaduct foundation, soil stabilization grouting at the portals, jet grouting in Stanwix Street, compensation grouting, instrumentation installation and monitoring, and the construction of approximately 82 lineal metres of cut-and-cover cast in place reinforced concrete tunnel construction. It is estimated the cost of boring the twin tunnels will range from USD50 million to USD60 million. Work is expected to begin in the fourth quarter of 2004 or the first quarter of 2005. Completion should occur in the third quarter or fourth quarter of 2007. Visit www.portauthority.org 30/04.The USD87.8 million lowest bid for the North Shore Connector project, a 1.9 km light rail extension from the existing Gateway Center Station to North Shore in Pittsburgh, has been submitted by Kenny Construction. The bid, which is 25% above the Port Authority's latest engineering estimate of USD70.7 million, is for twin bored tunnels under Stanwix Street, the Allegheny River and the North Shore, a launch shaft next to PNC Park, where digging under the river would start, and a receiving shaft under Stanwix Street, where digging would end. A JV of Trumbull Corp. and Obayashi submitted the USD119.8 million high bid and the Traylor / Shea JV a bid of USD112.9 million. The overall USD393 million project also includes building four stations and a 500 m subway spur to the David L. Lawrence Convention Center. Visit www.portauthority.org/grow/capital/northshore/index.asp and www.kennyconstruction.com 36/05.The Port Authority of Allegheny County is inviting bids, deadline 11th January, 2006 for the North Shore Connector, North side tunnels and station shell (contract No. NSC-003/006). The work of this project includes the construction and equipment of twin tube bored tunnels underneath the Allegheny River, cut-and-cover tunnel including station shell, and launch and receiving pits for the TBM. The work will also include utility removal, relocation, support, and replacement, excavation, shoring of the excavated tunnelling pits, cut-and-cover tunnel and station pits, soil stabilisation, monitoring of buildings adjacent to the alignment, tunnelling using the TBM, placement of the precast tunnel lining, placement of cast-in-place (secondary) liner, controlled fill, and replacement of sidewalks and streets. The TBM will be assembled in the north launch pit and will bore the first tunnel underneath the Allegheny River to the receiving pit in the Central Business District. The TBM will then be disassembled and transported back to the launch pit to bore the second tunnel.To maximise the opportunity for bidders to be able to participate in the North Shore Connector project, the Port Authority is structuring the NSC-003/006 bid documents to allow bidders to submit bids for one or more of the following scenarios: the NSC-003 work, consisting primarily of the bored tunnel construction, and/or the NSC-006 work, consisting primarily of the North Side cut-and-cover tunnel and station shell and S.R. 0065 bridge viaduct underpinning, and/or the NSC-003/006 work (the combined work of both NSC-003 and NSC-006). A pre-bid conference will be held on 15th November, 2005. This is a re-bid. Click us/66. Contact Port Authority of Allegheny County, Purchasing and Materials Management Department, 345 Sixth Avenue, Third Floor, Pittsburgh, Pennsylvania, 15222-2527. Contact Darla Hembree, tel. +1 412 5665145, fax +1 412 5665359, e-mail dhembree@portauthority.org 45/05.The North Shore Connector project includes boring twin tunnels under the Allegheny River and constructing 360 metres of cut-and-cover tunnel along the western side of PNC Park. Extending the light rail system from Downtown to the North Shore is considered a key to continuing development between PNC Park and Heinz Field. After the bids received in September were rejected because they were too high, the Port Authority deferred a proposed convention center spur and station in an effort to make the project affordable and rebidded it in November. Contract 003 is the bored tunnel. Contract 006 is the cut-and-cover part on the North Shore. Contract 003/006 is both sections.The bid results are as follows: Kenny Construction, USD106,457,029 (contract 003); Walsh/Traylor/Shea JV, USD163,210,054 (contract 003/006); North Shore Constructors, USD105,800,000 (contract 003), USD59,100,000 (contract 006) and USD156,500,000 (contract 003/006); Brayman Construction, USD59,889,430 (contract 006); and Jay Dee-Brayman JV, USD99,692,623 (contract 003) and USD158,165,604 (contract 003/006).The lowest bid offered for the package contract 003/006 was offered by North Shore Constructors, a joint venture including Trumbull Corp. and Obayashi. The authority has 120 days to review and consider the low bid. Click us/66. Visit www.portauthority.org 07/06.The Port Authority of Allegheny County awarded on 13th July a USD156.5 million contract to North Shore Constructors, a joint venture between Trumbull Corp. and Obayashi, to build the North Shore Connector. The contract includes construction of a light rail transit twin tunnel under the Allegheny River, that would connect downtown Pittsburgh to the North Shore, through a 1.9 km extension. The contract is the first of 16 to be awarded for the USD435 million project, which is scheduled for completion in 2011. The Port Authority has lined up USD348 million in federal money and another USD72.5 million in state funds for the connector project. Work is scheduled to begin in early fall. One of the first tasks will be to build a 14 m-deep launch shaft on the North Shore near the stadiums that will prepare the way for the drilling of the twin tunnels, one inbound and one outbound. That work probably will start next summer. A similar receiving shaft will be built on Stanwix Street near Penn Avenue. Click us/66 for details. Visit www.trumbullcorp.com, www.obayashiusa.com and www.portauthority.org 30/06.

Section of North Central Hillsboro Intertie Water Main at Tampa Bay to be pipe jacked by Bradshaw Construction beneath river at 1.2 bar pressure using Lovat 2.577 m-diameter soft ground EPB in weathered limestone with chert fragments, jointed and fractured stiff greenish-grey silty clay, and clay. Steel lining pipe has external diameter 2.54 m and internal diameter 2.49 m. Visit www.lovat.com 38/01.

Lovat TBM, Model RMP129SE Series 9600, has completed the 1.54 km-long Becher Street tunnel in Milwaukee. Super Excavators Inc set 1,280 rings in 10 months with a best of 20 rings/day. Visit www.lovat.com 37/01.

2.7 km-long second phase of Muni Metro under design from Caltrain terminal at Third and King St with four stations at Moscone Center, Market St, Union Square and Chinatown for San Francisco Municipal Railway. Visit www.muni.sfgov.org 34/01.The Municipal Transportation Agency of San Francisco awarded a contract to the joint venture of Parsons Brinckerhoff and PGH Wong Engineering Inc. to design an extension of the Muni Metro Third Street light rail transit (LRT) line. The project includes 2.7 km of tunnel through downtown San Francisco, four underground stations and one surface station. Services include conceptual and preliminary engineering, cost estimating, analysis of the existing EIR/EIS public outreach and contracting strategy. Conceptual and preliminary design is scheduled for completion in 2005, with construction starting shortly thereafter. Visit www.muni.sfgov.org and www.pbworld.com 16/03.

EUR160.1 million contract awarded to Barnard Impregilo Healy of Montana for boring 2.62 km of San Francisco Central Subway tunnel using two TBMs. Extension to T-Third line will run north along Fourth St from Brannan before going underground at Interstate 80, with stations at Moscone Center, Union Square and Chinatown. Opening scheduled for 2018. Visit www.muni.sfgov.org. 26/11.

SFMTA received three bids for the contract n. 1300 to construct San Francisco Central Subway’s stations, three of them underground (Chinatown, Union Square/Market Street and Yerba Buena Gardens/Moscone Center), track, and systems from the 4th and Brannan Station to the Chinatown Station.

Bidders are: Tutor Perini; JV Amoroso, FCC, Southland; and JV Skanska, Shimmick, Stacy & Witbeck. The apparent low bidder is Tudor Perini at EUR644 million. This is the final construction contract to complete the Central Subway. Work will begin in the third quarter of 2013 for completion in 2018. Visit http://centralsubwaysf.com. 18/13.

The SFMTA (San Francisco Municipal Transportation Agency) awarded  the EUR33.12 million (USD40.98 million) contract to replace the track structure and perform seismic strengthening and structural repairs in the Twin Peaks Tunnel (3.54 km-2.2 miles)to the Joint Venture of Shimmick/ConQuest. The work will have to be completed within  240 calendar days. Visit https://www.sfmta.com/sites/default/files/reports-and-documents/2018/01/2-6-18_item_14_contract_award_-_twin_peaks_tunnel.pdf. 11/18.

Invitation to tender, deadline 07.08.2018, for providing all labor and material for installation and connection of an upgraded M-Line Tunnel Lighting system. The M-Line Tunnel extends from the San Francisco Transition Structure, passing through Embarcadero, Montgomery St., Powell St., Civic Center, 16th St. Mission, 24th St. Mission, Glen Park, and Balboa, for a total of eight passenger stations and corresponding interlinking tunnels. The work includes demolition of existing fluorescent fixtures, replacement and addition of new LED fixtures for tunnel walkway lights, cross passage yellow lights, emergency trip station blue lights, crossover area lights and fire hose valve white lights. Provide replacement of lighting circuit wiring with new wiring to be run in existing conduits and new electrical panels. Including replacement of damaged conduit sections and/or supports where required. Removing all unused and/or abandoned lighting system, including but not limited to conduit and conduit support system, wiring system, and old fixates in M-Line Tunnel. Provide testing and commissioning of the M-Line Tunnel lighting upgrade. Value contract EUR7.56-8.42 million (USD8.8-9.8 million). A pre-bid meeting and a site inspection will be held on 11.07.2018 at 11.00 a.m. it will be  at the District's offices, Oakland, California. A conducted inspection tour of the Jobsite(s) will be held on July 12, 2018 at 1:30 a.m., at Glen Park BART Station fare gates, San Francisco, CA.  Interested prospective Bidders  have to confirm their intention to David Bui, tel 510-464-6383, email dbui@bart.gov.

Prospective Bidders or Interested Parties have to be registered on the BART Procurement Portal on line at https://suppliers.bart.gov  in order to download the Contract Documents. Click here or visit http://www.bart.gov/sites/default/files/docs/15AA-110%20Request%20for%20Advert%20with%20Adv%20Notice%206-19-2018.doc.

Contract n.15AA-110. 27/18.

Postponed from 07.08.2018 to 21.08.2018 the deadline of the invitation to tender, for providing all labour and material for installation and connection of an upgraded M-Line Tunnel Lighting system. Click us/63 and contact District Secretary’s Office, Oakland, California, email dbui@bart.gov. Visit http://www.bart.gov/sites/default/files/docs/15AA-110%20Request%20for%20Advert%20with%20Adv%20Notice%206-19-2018.doc.

Contract n.15AA-110. 33/18.

Five bids have been received for providing all labour and material for installation and connection of an upgraded M-Line Tunnel Lighting system in San Francisco. The three lowest bidders are ABM Electrical, Proven Management, DMZ Builders. The apparent lowest bidder is ABM Electrical Lighting Solutions with EUR10million (USD11.63million). Contact District Secretary’s Office, Oakland, California, email dbui@bart.gov. Visit http://www.bart.gov/sites/default/files/docs/15AA110_Summary%20of%20Bids.pdf.

Contract n.15AA-110. 38/18.

Tenders expected September, 2001 for Gwinnett County 1.8 km-long x 3.4 m-outside diameter tunnel through Piedmont geology in mixed face and soft ground conditions. Visit www.jjg.com 32/01.The Gwinnet County Department of Public Utilities has awarded a contract to Parsons Brinckerhoff to design a new wastewater transport and storage tunnel adjacent to Snellville, a suburb of Atlanta. As prime consultant for the project, Parsons Brinckerhoff is responsible for preparing a preliminary engineering report and conducting public meetings on the proposed design. The firm will complete final design and assist the county with the bid tendering process. PB will also provide construction management and engineering services during construction of the tunnel.The tunnel, which will be 3.66 m in diameter, will begin at the No Business Creek water reclamation facility and extend for 4,880 m to the shaft at the site of the existing Jack's Creek water reclamation facility. The project will enable the county to decommission the Jack's Creek facility by directing the sanitary flow from the Jack's Creek sewershed to No Business Creek by gravity. The tunnel will collect sanitary flow from another sewershed along its route, reducing power costs to the county by minimizing pumping.It will be driven in rock with a dewatering pumping station in the mining shaft at No Business Creek. There will be two access shafts along the tunnel length with sanitary flow admitted to the system at the upper shaft, at one of the intermediate access shafts, and at the dewatering pumping station. The upper shaft will also provide access and tunnel venting for odour control.Construction on the project is expected to commence in January 2005 with final completion scheduled for December 2007. Visit www.pbworld.com 02/04.The 4,880 m No Business Creek tunnel is still under design with 95% design complete. The tunnel will connect the 30-year-old No Business Creek and the Jacks Creek wastewater plants, that are being closed. Sewage will be pumped through to the F. Wayne Hill Water Resources Center near Buford. The tunnel will mostly follow Springdale and Everson roads, which run east to west, but it will also have to pass under private property. The county is in the process of acquiring subsurface easements from roughly 54 property owners. Finished inner diameter is 3.66 m. There will be four shafts: main shaft (12.2 m diameter and 55 m deep), exit shaft (7.6 m in diameter and 18 m deep) and two intermediate shafts around 4.6 m in diameter and 39 to 46 m deep. Bidding process to start in three to four months, with construction slated to begin in the summer of 2005. Very hard rock, mostly granite and gneiss. RQD some where around 35,000 to 45,000. 85% of the tunnel through hard rock and 15% through mix phase. A TBM will be used. The tunnel may need a maximum of 15% to 20% lining (concrete segmental rings, shotcrete and rock bolts). Mucking-out with loco and muck cars. Construction time to last 36 months, including all four shafts and one lift station. Visit www.gwinnettcounty.com 48/04.Gwinnett's Department of Water Resources on 19th March approved a USD54.2 million contract with a joint venture between Mole, Jay Dee, Kassouf and Murray Hill companies to build the 4,880 m, 3.66 m-diameter No Business Creek wastewater storage tunnel 60 metres below the surface. The tunnel, which will be bored with TBM machinery, will connect the Gwinnett County’s Jacks Creek sewage treatment plant with the now-defunct No Business Creek sewage plant site. From there, south Gwinnett’s sewage will be pumped to the F. Wayne Hill Water Resources Center in Buford. When the project is complete in 2010, the Jacks Creek plant will be shut down, as part of the county’s long-range plan to close its smaller, less-efficient facilities. Entrance shafts will be constructed at the No Business Creek and Jacks Creek water reclamation facility sites and also at the site with two intermediate shafts along the route. Crews will be drilling through hard rock 95% of the way. Click us/62. Visit www.co.gwinnett.ga.us, www.molecon.com, www.jaydeecontr.com and www.kassouftunnel.com 13/07.

  Proposed 35 km-long extension of San Francisco BART will include 14.5 km alignment in tunnel with five underground stations at Berryessa, Alum Rock, Civic Plaza/SJSU, Market St and Diridon/Arena, terminating at Santa Clara Caltrain station. Visit www.hatchmott.com and www.pbworld.com 26/01. 5.4 km-long, 5.5 m-diameter TBM-driven, segmentally-lined twin-tube railway system with eight NATM stations in design for MWAA Dulles airport for completion by 2006. Visit www.hatchmott.com and www.ilf.at 31/01.A USD51.2 million spending has been approved by the Valley Transportation Authority to begin planning the tunnel that will carry BART trains under downtown San Jose. Preliminary engineering is for a 7.2 km twin-bore tunnel that will run 15 to 23 m below ground starting at 28th and Santa Clara streets and extending to west of Interstate 880. Studies are expected to take two years or more. The VTA expects to award USD119 million in contracts for a half-dozen more studies by the end of summer. Visit www.vta.org 09/04.Proposed 25.76 km-long, USD6.1 billion extension of BART to Milpitas, San Jose and Santa Clara will include 6.4 km of twin running tunnels and three underground stations at Alum Rock, Downtown San Jose, and Diridon/Arena to terminate near Santa Clara Caltrain station. EIS during 2009, with construction scheduled 2009-2015. Visit www.vta.org/bart. 08/09.

Invitation to bid, deadline 24.01.2011, for tunnel intrusion detection system for Oakland, Wye and Berkeley Hills tunnels of San Francisco BART. Contract No 79HS-110, value USD1.5-2.0 million (EUR1.11-1.47 million), duration 180 days. Bidders may download request form at www.bart.gov/about/business/procurement/contractsout.aspx to be completed and submitted by 29.11.2011. Sealed bids to District Secretary's Office, 23rd Floor, 300 Lakeside Drive, Oakland, CA 94604-2688. Visit www.bart.gov. 47/11.

Request for Proposals, deadline 13.08.2018, for GEC (General Engineering Consulting) services for the BART Silicon Valley Phase II Extension (Project). GEC services to be performed during the preliminary engineering portion of the Project constitute the base scope of services.  Other Services are options to be exercised at VTA’s sole discretion and will be assigned via Task Orders. The contract is anticipated to be in effect beginning in late 2018 and continuing through completion of the construction, testing and commissioning phases, and closeout and turnover of the Project, an estimated eight (8) years. VTA reserves the right to extend the term of the contract. Deadline to Submit Questions July 18, 2018 by 5:00 p.m. (Pacific Time). The Pre-Proposal Conference will be held on July 13, 2018 at 10:00 a.m. at  Santa Clara VTA, Building A, Auditorium San Jose, California.  Contact  Santa Clara Valley Transportation Authority, attn Ephraim Cadaing, San Jose (California), email ephraim.cadaing@VTA.org. Click here or visit http://www.vta.org/servlet/servlet.FileDownload?file=00P1H000015OtenUAC.

Ref.n. RFP S18088 . 27/18.

The VTA Board of Directors awarded to the Mott McDonald/PGH Wong Engineering Joint Venture (MMW) the EUR109.03million (USD125 million) General Engineering services contract for the VTA’s Phase II Project. The VTA’s Phase II Project is a 9.66 km (6-mile) extension of the BART subway into downtown San Jose and Santa Clara, utilizing an innovative single-bore tunnelling methodology that minimizes construction disruptions. The project will include 4 stations - with three underground and one above - a 8.05 km (5-mile) subway tunnel, two ventilation structures, and a maintenance facility. BART will be responsible to operate and maintain the extension after its completion. Contact Santa Clara Valley Transportation Authority, attn Ephraim Cadaing, San Jose (California), email ephraim.cadaing@VTA.org. Visit http://www.vta.org/News-and-Media/Connect-with-VTA/General-Engineering-Contract-Awarded-for-BART-Phase-II-Project#.XDw2gVxKjIU.

Ref.n. RFP S18088. 03/19.

The deadline for the SOQ (Statement Of Qualifications) submission for RFQ S20221 BART Silicon Valley Phase II Extension Program / Tunnel / Trackwork Contract 2 has been postponed from 26/02/2021 to 12/03/2021.    

The 10 km (6-mile), BART Phase II Extension Project will extend southwest from the newly opened Berryessa/North San José Station with three more stations in San Jose and one in Santa Clara adjacent to the existing Santa Clara Caltrain Station.  About 8km (5 miles) of the alignment will be underground, with a single bore tunnel containing side-by-side and stacked tracks and platforms. Construction is planned to begin in 2022, with substantial construction completed by 2028, followed by system testing and then passenger service.  

By 23/04/2021 the Short-List Announcement. Three or up to four of the highest-ranked Respondents will be invited to submit proposals in response to VTA’s forthcoming Request for Proposals (RFP) about Contract 2.   

Contact  VTA- Department BART Silicon Valley, attn Mary Talentino (Contracts Manager), tel (408) 321-5733, email mary.talentinow@vta.org.   Please click here for further on the tender, here and us/61 for tunnelbuilder archive. Ref.n. S20221. 08/21. 

Request for Proposals, SOQ deadline 18/05/2021, for  the design, installation, and testing of all rail Systems for the BART Silicon Valley Phase II Extension (Project), Package 1 (CP1). VTA will review and score the SOQs to determine which Respondents are best suited and qualified to successfully execute the design and construction of the Project.  A Short-List of three (3) (or up to four (4)) of the highest-ranked Respondents will be created by 13/07/2021, each of which will be invited to submit proposals.  The Pre-Proposal Conference will be held on March 09, 2021 at 01:00 p.m.. Contact  BART Silicon Valley, attn Mary Talentinow, tel (408) 321-5733, email mary.talentinow@vta.org. For further, please click here. Ref.n. RFP S20220. 08/21. 

The Santa Clara Valley Transportation Authority (VTA) has completed its evaluation of Statements of Qualifications submitted in response to the Request for Qualifications (RFQ) S20221 BART Silicon Valley Phase II Extension Program / Tunnel & Trackwork Contract 2.  

The Short-Listed teams, to be invited to submit proposals in response to VTA’s forthcoming RFP, are 

• The BART Silicon Valley Phase II Tunnel Partners (B2TP), a Joint Venture between Acciona Construction Corp USA (Acciona), FCC Construcción S.A. (FCC) and The Lane Construction Corporation (Lane), supported by Hatch Associate Consultants Inc. (Hatch). 
• Bay Valley Connect, a Joint Venture between Civil & Building North America (BouyguesTP’ssubsidiaryintheU.S.),VINCI ConstructionandBarnard Construction, supported by Parsons 
• Kiewit Shea Traylor Joint Venture, a JV between Kiewit Infrastructure West Co, J.F. Shea Construction and Traylor Brothers, supported by Kiewit Engineering Group and ARUP 

For further information please click here. Also visit  https://secure.procurenow.com/portal/vta/projects/6325. Ref.n. RFP S20221. 22/21. 

The Santa Clara Valley Transportation Authority (VTA) has completed its evaluation of Statements of Qualifications submitted in response to the RFQ for the design, installation, and testing of all rail Systems for the BART Silicon Valley Phase II Extension (Project), Package 1 (CP1). The Bechtel Infrastructure Corporation and Mass Electric Construction Company  short-listed teams have to submit proposals. Contact  BART Silicon Valley, attn Mary Talentinow, tel (408) 321-5733, email mary.talentinow@vta.org. For further, please click here. Ref.n. RFP S20220. 26/21. 

Request for Proposals, SOQ deadline 23/09/2021, for the design and construction of the three underground stations - 28th Street/Little Portugal, Downtown San Jose (DTSJ) and Diridon  - along with their associated headhouse, ancillary facilities, and street-level improvements for the BART Silicon Valley Phase II Extension (Project), Contract Package 4 (CP 4-Stations). A Short-List of up to four (4) of the highest-ranked Respondents will be created by 30/11/2021, each of which will be invited to submit proposals.  The Pre-Proposal Conference will be held on July 12, 2021 at 01:00 p.m.. Contact  BART Silicon Valley, attn Mary Talentinow, tel (408) 321-5733, email mary.talentinow@vta.org. For further, please click here. Ref.n. RFP S20241. 26/21.