Project: Jollyville Transmission Main Tunnel
Owner: City of Austin
Project Highlights: Approximately 35,000 linear feet of 84" finished diameter transmission main tunnel.
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Project: New Irvington Tunnel
Owner: San Francisco Public Utilities Commission
Contract Amount: $226,657,700.00
Project Type: Current
Project Highlights: The New Irvington Tunnel Project, located in San Francisco, California, involves the construction of a 3.5 miles long, 14 ft diameter tunnel for water conveyance, replacing the existing section of the Hetch Hetchy Water System built in 1932 and provides the City of San Francisco with a seismically sound water supply, being able to withstand a magnitude 7.2 earthquake.
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Project: Eastside Water Supply Project Raw Water Intake
Owner: Monroe County Authority
Contract Amount: $34,900,160.00
Project Type: Past
Project Highlights: Construction of a raw water intake tunnel system. Project includes approximately 6,000 linear feet of 10-ft diameter intake tunnel with a 5,000 linear foot section underneath Lake Ontario; an intake crib structure; an outfall structure; chemical and sampling piping and supports out to the intake structure; a riser well with structures to accommodate future screening equipment; and pump adits to accommodate future pumping equipment.
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Project: Bi-County Water Tunnel
Owner: Washington Suburban Sanitary Commission
Contract Amount: $112,552,414.00
Project Type: Current
Project Highlights: Construction of approximately 5.3 miles of 120" diameter deep rock tunnel and associated 84-inch diameter welded steel pipe.
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Project: Lake Mead Intake No. 3 - Connector Tunnel
Owner: Las Vegas Valley Water District
Contract Amount: $44,519,000.00
Project Type: Current
Project Highlights: Installation of (1) Tunnel Access Shaft approx. 35' diameter and 450 VF. Installation of 2500 lf 14'-16' diameter mined tunnel.
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Project: Briar Creek Relief Sewer, Phase I
Owner: Charlotte Mecklenburg Utilities District
Project Highlights: Installation of 2800 linear feet of 96-inch rock tunnel using TBM and conventional tunneling methods.
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Project: Johnson Creek Interceptor Project (WF-3)
Owner: Trinity River Authority
Project Highlights: Installation of 7,300 linear feet of 88" tunnel constructed by TBM and conventional tunnel methods for 54-inch gravity sewer main.
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Project: Mountain Creek Subsystem MC-5 & MC-6 Interceptor Project Phase 1
Owner: Trinity River Authority
Project Highlights: Installed 1,480 linear feet of 124-inch diameter tunnel, lined with steel ribs and wood lagging using a tunnel boring machine in depths of up to 70 feet.
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Project: Kansas River Tunnel
Owner: Water District No. 1 Johnson County
Project Highlights: Installation of 1,440 linear feet of 8-foot diameter tunnel
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Project: Eagle Mountain Connection Pipeline, Contract A
Owner: Tarrant Regional Water District
Project Highlights: Installation of 2,050 linear feet of 96-inch steel water pipeline inside 120-inch diamter tunnel.
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Project: 98th Street Drainage Improvements
Owner: City of Lubbock, TX
Project Highlights: Installation of 8,600 linear feet of between 48-inch and 60-inch final lined tunnel.
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Project: North MacGregor Storm Sewer Relief
Owner: City of Houston, TX
Project Highlights: Installation of 3,340 linear feet of 15.5 ft single pass tunnel using pre-cast concrete segments.
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Project: Salado Creek WRC to Dos Rios WRC Interconnect
Owner: San Antonio Water System
Project Highlights: Installation of 15-foot diameter tunnel under the San Antonio River.
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Project: South Lubbock Drainage Improvement Project
Owner: City of Lubbock, TX
Project Highlights: Installation of 11,950 linear feet of between 88-inch and 96-inch tunnel. Final lining was between 60-inch and 72-inch pipe.
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Project: Northwest Drainage Improvements Project
Owner: City of Lubbock
Project Highlights: This project includes the construction of 10x10 reinforced concrete box approximately 1,216 linear feet in length. This project includes 4 shafts.
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