Tunnels

A. R. Davis, Phase 4
A. R. Davis, Phase 4 1000 750 Southland Holdings

Completed in 1986 by Mole Constructors, the A.R. Davis, Phase 4 project entailed approximately 3,484 linear feet of 117-inch tunnel, employing a 117-inch Lovat Tunnel Boring Machine. Excavation occurred through…

read more
Bluestone Contract BTRS-1
Bluestone Contract BTRS-1 1000 750 Southland Holdings

Completed in 1993 by Mole Constructors, the Bluestone Contract BTRS-1 project involved the construction of a tunnel stretching over approximately 16,200 linear feet to accommodate 60-inch concrete pipe. The excavation…

read more
Onion Creek Interceptor Tunnel, Section 4
Onion Creek Interceptor Tunnel, Section 4 1000 750 Southland Holdings

Completed in 1985 by Mole Constructors, the Onion Creek Interceptor Tunnel, Section 4 project involved 29,368 linear feet of 110-inch tunnel, employing a 110-inch Lovat Tunnel Boring Machine, a 117-inch…

read more
Hilltop Interceptor Contract H-1
Hilltop Interceptor Contract H-1 1000 750 Southland Holdings

Completed in 1993 by Mole Constructors, the Hilltop Interceptor Contract H-1 project entailed the construction of 18,000 linear feet of tunnel to accommodate both 60-inch and 66-inch concrete pipes. The…

read more
Merrill Creek Reservoir
Merrill Creek Reservoir 1000 750 Southland Holdings

Completed in 1985 by Mole Constructors, the Merrill Creek Reservoir project entailed constructing a 1,540 linear feet tunnel with an 11-foot diameter tunnel. It was conventionally excavated as a horseshoe-shaped…

read more
Hilltop Interceptor Contract H-2
Hilltop Interceptor Contract H-2 1000 750 Southland Holdings

Completed in 1992 by Mole Constructors, the Hilltop Interceptor Contract H-2 project involved roughly 18,000 linear feet of tunnel for 60-inch and 66-inch concrete pipes. Excavation was carried out through…

read more
Highway 71 Interceptor
Highway 71 Interceptor 1000 750 Southland Holdings

Completed in 1991 by Mole Constructors, the Highway 71 Interceptor project involved approximately 3,400 linear feet of 78-inch tunnel using a 78-inch Lovat EPB Tunnel Boring Machine. The tunnel was…

read more
West Leg Contract No. 1
West Leg Contract No. 1 1000 750 Southland Holdings

Completed in 1991 by Mole Constructors, the West Leg Contract No. 1 project encompassed roughly 10,000 linear feet of tunnel for 90-inch concrete pipe. The tunnel traversed silty clays at…

read more
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…

read more
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.…

read more