Tunnel Business Magazine

APR 2018

TBM: Tunnel Business Magazine is the market leader for North America. TBM is written for leading professionals in all aspects of tunneling and covers project stories, design elements, contracting strategies, legal issues, new technology and more.

Issue link: http://digital.tunnelingonline.com/i/958953

Contents of this Issue

Navigation

Page 44 of 47

TUNNELINGONLINE.COM TBM: TUNNEL BUSINESS MAGAZINE // APRIL 2018 4 5 Upcoming tunneling components of Project Clear include (Project, Construc- tion Begin, Construction Cost Estimate, Tunnel Length, Tunnel Diameter): Lower & Middle Des Peres Storage Tunnel, 2020, $631,000,000, 9 miles, 30 ft dia University City Sanitary Storage Facility, 2018, $40,000,000, 1,250 ft, 30 ft dia Lower Meramec Tunnel, 2018, $170,000,000, 6.8 miles, 8 ft dia River Des Peres Tributaries CSO Tun- nel, 2024, $375,000,000, 12,144 ft, 20 ft dia Upper River Des Peres CSO Storage Tunnel, 2028, $226,000,000, 8,976 ft, 24 ft dia NEW YORK New York Flushing Bay CSO The New York City Department of En- vironmental Protection has begun draft- ing an RFP for design of 2.5-mile long, 25 million gallon CSO tunnel in Queens as part of a Long-Term Control Plan. The tun- nel is expected to be 18-20 ft in diameter an estimated cost of between $670 million $829 million for the preferred alternative. Preliminary plans envision construction occurring from 2026 to 2035. DEP expects to initiate design in 2019. New York Hudson Tunnel Project/Gateway The Hudson Tunnel Project is a new two-track heavy rail tunnel along the Northeast Corridor from the Bergen Palisades in New Jersey to Manhattan that will directly serve Penn Station New York. It consists of three major elements: the Hudson Yards right-of-way preserva- tion project, the Hudson Tunnel, and the rehabilitation and modernization of the existing North River tunnel. A JV of WSP, AECOM and STV has been awarded the design contract. The tunnel contract, estimated at $12 billion to $13 billion, is envisioned to be a design-build including the Palisades Tunnel and Hud- son Tunnel. Construction was expected to begin in 2019 but uncertainties regard- ing funding may impact the schedule. The original schedule projected both the new tunnel and the rehabilitated tunnel open for revenue service by 2028. New York Second Avenue Subway – Phase 2 Design is underway for the Phase 2 of the second Avenue Subway. A joint ven- ture of WSP and STV is working on the design for the project that extends the line northward from 96th Street to 125th Street – a total of 1.5 miles with three new stations. The alignment will use some ex- isting tunnels originally built in the 1970s, in addition to new soft-ground TBM tun- nels. The cost estimate for this phase of the project is $6 billion, with revenue ser- vice anticipated between 2027 and 2029. OHIO Cleveland oject Clean Lake Project Clean Lake for the Northeast Ohio Regional Sewer District (NEORSD) includes several major tunnel components to store and convey combined sewer over- flows. The projects include: Westerly Storage Tunnel – 9,600 ft of 25-ft diameter tunnel. The design con- tract was awarded to a joint venture Mott MacDonald and MWH in fall 2015 and also includes a $28 million 46-ft diameter, 200-ft deep submersible Tunnel Dewatering Pump Station. The Westerly Storage Tunnel advertised for bid in Q4 2017, and in March was awarded to Jay Dee-Obayashi for $135 million. The Westerly Tunnel Dewater- ing Pump Station will bid in 2019; Shoreline Storage Tunnel – 15,300 lf of 21-ft diameter soft ground CSO tunnel. It is anticipated to bid in 2021; Shoreline Consolidation Sewer – 11,700 lf of 9.5-ft diameter soft ground tunnel. It is anticipated to bid in 2021; Southerly Storage Tunnel – 18,340 lf of 23-ft diameter CSO tunnel. It is antici- pated to bid in 2024; Big Creek Storage Tunnel – 22,400 lf of 18-ft diameter CSO tunnel. It is antici- pated to bid in 2029. RHODE ISLAND Pawtucket/East Providence oject Clean Lake The Narragansett Bay Commission (NBC) has begun conceptual design of the third and final phase of its Combined Sewer Overflow Program. Phase III includes the Pawtucket Tunnel, NBC's second CSO storage tunnel. NBC completed the Providence Tunnel, a 16,500-ft long, 26-ft diameter CSO stor- age tunnel, in 2008 during Phase I of its CSO program. The Pawtucket Tunnel will be approxi- mately 13,000 ft long, 28 ft in diameter and located in bedrock about 200 ft below the ground surface. The contract to con- struct the Pawtucket Tunnel will include the launch and recovery shafts (which will become permanent access shafts), two to three drop shafts with connecting adits at existing outfall locations, and an underground shaft- or cavern-style tun- nel pump station. The program/construction manager for Phase III is Stantec and its teaming part- ner Pare Corporation. Construction of the Pawtucket Tunnel is anticipated to begin in late 2020 or early 2021. TEXAS Austin Phase 2 Lake Travis Deep Water Intake The Brushy Creek Regional Utility Authority (BCRUA) has embarked on a multiple year program to increase capac- ity and manage concerns associated with recent historic low water levels of Lake Travis. The program includes: a multiple level-screen deep water intake assembly and shaft extending about 70-ft below lake bottom; approximately 10,000-ft of 96-in. diameter tunnel to convey water by gravity from the intake to a new on- shore pump station (with a subterranean forebay, multiple individual pump wells and a 30 ft diameter wetwell extending about 300 ft below grade); and 3,000-ft of 84-in. diameter pressurized transmis- sion tunnel. Final design is anticipated to begin in 2019, and construction is antici- pated to begin in 2021 or 2022. BCRUA is currently acquiring easements for the project. VIRGINIA Hampton/Norfolk Hampton Roads Bridge-Tunnel The HRBT Expansion project will build another bridge-tunnel and widen the four-lane segments of I-64 in Hampton and Norfolk to ease daily congestion be- tween the Peninsula and South Hampton Roads, a corridor vital to Virginia's econ- omy. In December, the Virginia Depart- ment of Transportation issued an RFQ from interested firms. Responses were due March 2. Contract award for the $3.3 billion project is anticipated in early 2019, with project completion in 2024. Tun- neled portions of the project are expected to be constructed with either immersed tube or bored methods.

Articles in this issue

Archives of this issue

view archives of Tunnel Business Magazine - APR 2018