Tunnels are vital links that unite communities, drive economic growth and increase mobility. Transport tunnels link cities and reduce travel time. Water and wastewater tunnels make modern hygiene and sanitation standards possible. Utility tunnels power our lives by bringing us our electricity, telephone, internet and gas. And, underground tunnels contribute to our transit networks.

WSP has one of the longest standing and extensive tunnelling practices around the globe. In both rock and soft ground, we create tunnels and underground spaces that are efficient, resilient and sensitive to the environment.


Bringing together all required disciplines under one roof, WSP provides services for the planning, design, rehabilitation, and construction of tunnels for across road, rail, sewerage, water supply, hydropower, desalination plant and utility applications. From pre-feasibility, through fire and risk engineering and ventilation systems to post-maintenance, we offer in-depth expertise throughout the tunnel life cycle.


Our hands-on experience includes all types of tunnels – rock, soft, ground, cut and cover, immersed and trenchless. Our engineers have worked on a wide variety of underground construction projects spanning road tunnels and subway stations, to water conveyance systems.


Full Life Cycle Services

We provide comprehensive services for every aspect of the construction of tunnels and underground projects, including tunnel design, ground improvement, initial and final support, instrumentation and monitoring, tunnel systems, and ventilation/fire safety aspects. Our expertise provides support across an entire project, from feasibility, to design, and construction management, testing, commissioning through to decommissioning. We also provide condition assessments, rehabilitation, re-purposing, and upgrading of tunnels and underground transportation facilities. 


Tunnels begin with ground investigation because accurate surveys are the best way to prevent surprises and delays further down the road. Our geotechnical experts have dedicated years to the practice and research of ground behaviour to improve our ability to construct tunnels without disturbing existing facilities and utilities, and ensure that our work doesn’t impact the surrounding area and broader environment.


Technology-Driven Design

Our design teams work with the latest technologies, including numerical modelling of ground/structure interaction, Building Information Modelling (BIM) and visualisation. This allows us to perfect schematics in virtual reality, allowing problems to be rectified before ground is broken and reducing the likelihood of surprises arising during construction that can cause delays, extra costs, or damage to surrounding structures.