We provide comprehensive services for every aspect of underground construction, including site investigation, tunnel design, ground improvement, initial and final support, instrumentation and monitoring, tunnel systems and ventilation and fire/life safety.
We also provide support across the entire project life cycle, from design to construction management, to testing and commissioning. We are experienced in condition assessment, rehabilitation, re-purposing and upgrading of tunnels and underground transportation facilities.
Our design team works extensively with the latest technology, such as numerical modeling of ground/structure interaction, as well as BIM and VDC, to perfect schematics in virtual reality, allowing problems to be rectified before ground is broken and reducing the likelihood of delays, extra costs or damage to surrounding structures.
Our wide-ranging expertise in rail, roads and aviation means that we understand transportation tunnels from all sides of the project, providing a holistic approach to their design and construction.
Rail and Transit Tunnels
WSP has managed large, complex tunneling projects, set records in designing TBM-driven tunnels and has engineered tunnels that are exceptionally deep, large in diameter and set in challenging ground conditions. We regularly advise transit agencies on the increasingly critical issues of tunnel safety and security, vulnerability assessment, durability, sustainability and risk management.
Whether threading roadway tunnels under busy city streets or boring through mountainous terrain, we are experienced in designing and managing a variety of construction techniques, including conventional drill-and-blast and excavation with tunnel boring machines.
We are also experienced in the use of specialized techniques like soft-ground or hard-rock sequential excavation, and immersed tunnel technology. Our projects have involved some of the most challenging ground conditions, high water pressures and seismic or environmental conditions.