Tunneling

Application
A method of constructing new large-diameter pipelines in busy urban areas and challenging geological conditions. Because tunneling requires man-entry, it is ideal for construction of large-diameter tunnels, ranging from 5- to 26-feet in diameter.

Advantages
Tunneling is an economical, long-term solution for increasing the capacity of an existing wastewater and storm water collection system. It is often the best method for transporting large volumes of water. By eliminating the need for pump stations, new interceptor and relief tunnels can save millions in utility costs over the long term. Insituform® has the state-of-the-art equipment and expertise to work in a broad range of geological conditions.

Installation
Backed by over 30 years of experience, our large-diameter tunnels are constructed by highly experienced work crews working at depths of up to 260 feet. Accessed through periodic drop shafts, the tunnels themselves are bored with minimal surface disruption. Pipelines are typically installed in a separate process after the tunnel is complete.

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