Tunnels

Black River Tunnel
Black River Tunnel 1000 750 Southland Holdings

Completed in 1978 by Mole Constructors, the Black River Tunnel project entailed roughly 13,000 linear feet of tunnel, utilizing a 102-inch Lovat TBM and a 110-inch Scott Spider. The tunnel,…

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Hinckley Hydroelectric
Hinckley Hydroelectric 1000 750 Southland Holdings

Completed in 1985 by Mole Constructors, the Hinckley Hydroelectric project involved excavating rock for the penstock and constructing a cyclopean tunnel. Additionally, excavation work was done through the existing dam.…

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Hilliard Boulevard Tunnel
Hilliard Boulevard Tunnel 1000 750 Southland Holdings

Completed in 1978 by Mole Constructors, the Hilliard Boulevard Tunnel project involved constructing a 1,600 linear feet tunnel with a diameter of 74 inches using a 74-inch Scott Tunnel Boring…

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Dykes Branch Interceptor
Dykes Branch Interceptor 1000 750 Southland Holdings

Completed in 1985 by Mole Constructors, the Dykes Branch Interceptor project involved placing approximately 4,000 linear feet of cellular annulus backfill around 27-inch Reinforced Concrete Pipe encased in an 86-inch…

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Neebing-McIntyre Sanitary Trunk Sewer, Contract 3
Neebing-McIntyre Sanitary Trunk Sewer, Contract 3 1000 750 Southland Holdings

Completed in 1977 by Mole Constructors, the Neebing-McIntyre Sanitary Trunk Sewer, Contract 3 project involved constructing approximately 11,000 linear feet of tunnel with a diameter of 7 feet. The tunnel…

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Chambers Creek Basin Wastewater Treatment Plant Outfall Sewer
Chambers Creek Basin Wastewater Treatment Plant Outfall Sewer 1000 750 Southland Holdings

Completed in 1984 by Mole Constructors, the Chambers Creek Basain Wastewater Treatment Plant Outfall Sewer project entailed excavating approximately 2,000 linear feet of tunnel for a 60-inch RCP pipe using…

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Lee Seville – Phase 1
Lee Seville – Phase 1 1000 750 Southland Holdings

Completed in 1975 by Mole Constructors, the Lee Seville – Phase 1 project involved the construction of a 72-inch tunnel spanning 4,104 linear feet. A 7-inch Scott Tunnel Boring Machine…

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Broadview Road Relief Interceptor
Broadview Road Relief Interceptor 1000 750 Southland Holdings

Completed in 1990 by Mole Constructors, the Broadview Road Relief Interceptor Project project entailed about 7,000 linear feet of tunneling using a Robbins 96-inch Tunnel Boring Machine. The tunnel accommodated…

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Trans-Missouri River Tunnel Project
Trans-Missouri River Tunnel Project 1000 750 Southland Holdings

Completed in 1991 by Mole Constructors, the Trans-Missouri River Tunnel project involved around 14,886 linear feet of 128-inch diameter tunnel, with shafts reaching depths of 340 feet using freezing methods.…

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Hilltop Interceptor Contract G
Hilltop Interceptor Contract G 1000 750 Southland Holdings

Completed in 1990 by Mole Constructors, the Hilltop Interceptor Contract G project involved approximately 12,000 linear feet of tunneling, with Monolithic concrete lining. A modified Lovat 157-inch / 164-inch Tunnel…

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