Tunnels

Thunder Bay Tunnel
Thunder Bay Tunnel 1000 750 Southland Holdings

Mole Constructors, Inc. performed the first Precast Segment Tunnel in North America when we excavated 3.3 km of 2.16 m diameter sanitary trunk sewer in the city of Thunder Bay,…

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Eastgate Trunk Improvements
Eastgate Trunk Improvements 1000 750 Southland Holdings

Completed in 1983 by Mole Constructors, the Eastgate Trunk Improvements project involved approximately 1,800 linear feet of tunneling, employing a 76-inch Scott Tunnel Boring Machine. The tunnel was supported by…

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Blue River Force Main
Blue River Force Main 1000 750 Southland Holdings

Completed in 1982 by Mole Constructors, the Blue River Force Main project involved the excavation of 8,300 linear feet using a 102-inch Lovat Tunnel Boring Machine. Rock and bolt (R&B)…

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McDowell Tunnel Extension
McDowell Tunnel Extension 1000 750 Southland Holdings

Completed in 1982 by Mole Constructors, the McDowell Tunnel Extension project entailed the construction of 10,800 linear feet of 102-inch tunnel employing a 102-inch Lovat Tunnel Boring Machine. The tunnel…

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White River Basin Part A
White River Basin Part A 1000 750 Southland Holdings

Completed in 1982 by Mole Constructors, the White River Basin Part A project involved approximately 4,500 linear feet of 48-inch tunnel constructed using a 63-inch Scott Tunnel Boring Machine. The…

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Four-Mile Treatment Plant – Contract 1
Four-Mile Treatment Plant – Contract 1 1000 750 Southland Holdings

Completed in 1981 by Mole Constructors, the Four-Mile Treatment Plant – Contract 1 project involved the installation of approximately 5,000 linear feet of 60-inch pipe within a tunnel. The tunnel…

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Stillwater Tunnel Backfill Grouting
Stillwater Tunnel Backfill Grouting 1000 750 Southland Holdings

Completed in 1981 by Mole Constructors, the Stillwater Tunnel Backfill Grouting project involved repairing approximately 7,000 linear feet of tunnel without excavation. Repair methods included backfill grouting, cement slurry application,…

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I-696 Sewer Repair
I-696 Sewer Repair 1000 750 Southland Holdings

Completed in 1981 by Mole Constructors, the I-696 Repair project involved relining approximately 4,000 linear feet of 102-inch tunnel using corrugated, galvanized 92-inch liner plates. The process included filling the…

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Newtown Interceptor – Contract A
Newtown Interceptor – Contract A 1000 750 Southland Holdings

Completed in 1980 by Mole Constructors, the Newton Interceptor – Contract A project involved excavating approximately 10,000 linear feet of 106-inch tunnel using a 106-inch Lovat Tunnel Boring Machine. The…

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Four-Mile Treatment Plant – Contract 2
Four-Mile Treatment Plant – Contract 2 1000 750 Southland Holdings

Completed in 1980 by Mole Constructors, the Four-Mile Treatment Plant – Contract 2 project encompassed about 3,300 linear feet of tunnel and 4,000 linear feet of open cut. It utilized…

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