\ Upcoming Projects — TBM: Tunnel Business Magazine
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Upcoming Projects

CALIFORNIA
Los Angeles
Clearwater Program Effluent Outfall Tunnel
The Clearwater Program Joint Water Pollution Control Plant (JWPCP) Effluent Outfall Tunnel is part of an extensive planning effort by the Sanitation Districts of Los Angeles County to analyze the needs of its Joint Outfall System to the year 2050. The Effluent Outfall Tunnel is envisioned to replace the existing 8- and 12-ft tunnels with a new 37,000-lf, 18-ft ID post-tensioned concrete segmented lined tunnel. All tunneling work will be done from a single shaft located at the Districts’ JWPCP located in the City of Carson. Structures located at the start and end of the tunnel will connect to the existing Ocean Outfall System facilities. Project advertising and bidding is anticipated to occur in the second quarter of 2017.
Web: http://www.clearwaterprogram.org/clearwater/

Sacramento
California Water Fix
The California Water Fix Program is a comprehensive effort to improve water conveyance in the Sacramento-San Joaquin Delta region. Key components of the program include a series of water conveyance tunnels that will allow for transport of up to 9,000 cfs of water directly from the Sacramento River to the major export pumping plants in the south end of the Delta. The components of this program will replace the current water diversion activities that rely on a series of improved channels and canals to move the water southward in the Delta. The program consists of three river intake structures, approximately 10 miles of 29-ft and 40-ft ID tunnels, and approximately 60 miles of 40-ft ID main conveyance tunnels, and a 9,000 cfs pumping facility located at the terminus of the main tunnels. The main conveyance tunnels will be configured in a parallel twin bore arrangement, with tunnel invert depth of averaging approximately 150 ft below ground surface. In addition to launching and receiving shafts, a series of ventilation/access shafts will be constructed along each tunnel reach. Current conceptual engineering efforts have been completed to support the environmental impact documents that are being circulated for public comment as part of the EIR/EIS process. The EIR/EIS is expected to be completed in fall 2016, and tunnel design is anticipated to commence in early 2018 with the first tunnel contracts being advertised for construction bids in mid-2020. Subsequent tunnel construction packages will be advertised on approximate 6-month intervals following the first contract award. Approximately five to six tunnel construction contracts will be awarded under this program. It is currently anticipated the facilities will be operational by 2033.
Web: https://www.californiawaterfix.com/

San Jose
BART Silicon Valley Phase II Extension
Phase II of the 6-mile BART Silicon Valley Extension includes a 5-mile tunnel through downtown San Jose. In March, the Federal Transit Administration (FTA) gave the green light to the Santa Clara Valley Transportation Authority (VTA) to enter the six-mile BART Silicon Valley Phase II Extension into the Project Development phase of the Federal New Starts funding program. This milestone signifies that VTA has “pre-award authority” to incur costs to advance engineering and design activities to support the environmental review process.

Activities related to the Project Development phase are necessary to refine a cost estimate and financial plan for the project. VTA must complete a number of activities during this phase which include: clearly defining the project scope after performing an alternatives analysis, known as selecting a locally preferred alternative; identifying a funding plan which is necessary for the project to be included in the regional long range transportation plan; and completing the environmental review process
Web: http://www.vta.org/bart/

CONNECTICUT
Hartford
South Hartford Conveyance and Storage Tunnel
The South Hartford Conveyance and Storage Tunnel for the Metropolitan District Commission (MDC) has been awarded to a joint venture of Kenny/Obayashi with a bid of $279.4 million. Work in the South Hartford tunnel contract includes construction of an 18-ft finished (lined) diameter tunnel 21,800 ft in length in deep rock, launch shaft, retrieval shaft, pump station excavation shaft, eight drop shafts, adits, six de-aeration chambers and odor control at potential release points. The launch shaft is to be excavated at 38 ft diameter, the retrieval shaft at 33 ft diameter, and the pump station shaft at 74 ft diameter. The drop shaft diameters vary from 42 to 72 in. The estimated construction duration is 54 months.

ILLINOIS
Chicago
Albany Park Storm Water Diversion Tunnel
Kenny Construction Co., a subsidiary of Granite Construction, was recently awarded a $63 million contract by the Chicago Department of Transportation for the construction of the Albany Park Storm Water Diversion Tunnel in Chicago, Illinois. Kenny will be responsible for the construction of a 1-mile, 18-ft diameter concrete lined rock tunnel located in the Albany Park neighborhood in the Northwest side of Chicago. Scope of the work includes inlet and outlet shafts, the inlet structure on the North Branch of the Chicago River as well as the outlet structure on the North Shore Channel. The project is intended to reduce surface flooding along the river by diverting excess storm water without affecting the river’s water level in normal times. Construction is expected to be completed in approximately two years.
Web: http://www.33rdward.org/our-community/albany-park-storm-water-drain-project

Indianapolis
Deep Tunnel System
Indianapolis
Dig Indy Tunnel System
The four remaining deep tunnels for Citizens Energy Group’s Dig Indy Tunnel System include the White River Tunnel, Lower Pogues Run Tunnel, Fall Creek Tunnel and Pleasant Run Deep Tunnel. All tunnels will be 18 ft in finished diameter with average depths of approximately 250 ft below the ground surface, and will be constructed in limestone and dolomite using a main beam TBM. Approximate tunnel lengths are: White River Tunnel – 31,000 ft; Lower Pogues Run Tunnel – 10,000 ft; Fall Creek Tunnel – 20,000 ft; and Pleasant Run Deep Tunnel – 39,000 ft. The White River, Lower Pogues Run and Fall Creek Tunnels will launch from a previously constructed deep access shaft, and the construction of one intermediate shaft and one retrieval shaft will be required. The Pleasant Run Deep Tunnel will launch from a new deep access shaft, and the construction of one intermediate and one retrieval shaft will be required. Up to 27 drop and vent structures are anticipated to convey flow into the tunnels. A solicitation event for the White River and Lower Pogues Run Tunnels was held in the fall of 2015, and included non-mandatory alternates for the Fall Creek and Pleasant Run Tunnels. The Shea-Kiewit joint venture was issued a contingent award in December 2015 for all four tunnels. In June 2016 the contract was executed, and the contractor commenced construction beginning with the White River Tunnel.

OHIO
Cleveland
Doan Valley Storage Tunnel
This 17-ft diameter tunnel will extend 9,700 ft. The $130 million project will advertise for bid in 2017.

Cleveland
Westerly Main CSO Storage Tunnel
The tunnel consists of 14,000 ft of 24-ft diameter tunnel. The $216 million project will likely award design in 4Q 2015, and advertise for bid in 2020.

PENNSYLVANIA
Pittsburgh
ALCOSAN CSO Tunnels
The Allegheny County Sanitary Authority (ALCOSAN) is designing a tunnel program to control combined sewer overflows (CSOs) as part of a consent decree with EPA. The $2.8 billion system improvement program includes tunnel segments to store and treat overflows. The improvements are slated to be complete by 2026. The tunnels include: Ohio River Segment (1.9 miles, 12-14 ft in diameter, $84 million); Allegheny River Segment (3.6 miles, 12-14 ft in diameter, $136 million); and Monongahela River Segment (4.5 miles, 12-14 ft in diameter, $152 million). Additionally the program will include interceptor and consolidation sewers, dewatering pump station and treatment plant improvements.

The tunnel consists of 14,000 ft of 24-ft diameter tunnel. The $216 million project will likely award design in 4Q 2015, and advertise for bid in 2020.

PENNSYLVANIA
Pittsburgh
ALCOSAN CSO Tunnels
The Allegheny County Sanitary Authority (ALCOSAN) is designing a tunnel program to control combined sewer overflows (CSOs) as part of a consent decree with EPA. The $2.8 billion system improvement program includes tunnel segments to store and treat overflows. The improvements are slated to be complete by 2026. The tunnels include: Ohio River Segment (1.9 miles, 12-14 ft in diameter, $84 million); Allegheny River Segment (3.6 miles, 12-14 ft in diameter, $136 million); and Monongahela River Segment (4.5 miles, 12-14 ft in diameter, $152 million). Additionally the program will include interceptor and consolidation sewers, dewatering pump station and treatment plant improvements.


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