Tunnels

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…

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…

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,…

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…

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…

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…

Completed in 1980 by Mole Constructors, the Newton Interceptor – Contract B project entailed a 433 linear foot tunnel with a diameter of 5 feet, employing unsupported drill and blast…

Completed in 1980 by Mole Constructors, the Four-Mile Treatment Plant – Contract 3 project comprised of about 2,000 linear feet of 48-inch pipe installed in a tunnel and 3,000 linear…

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,…

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.…