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Illuminated underground tunnel with railway tracks and cables along the walls.Illuminated underground tunnel with railway tracks and cables along the walls.

Geotechnical and Tunnels

We combine detailed planning with integrated solutions to deliver tunnelling projects for both water and transport infrastructure, even under the most complex ground conditions. 

Ravinder Singh Sason, CPEng, PMP

Market Lead

Ravinder Singh Sason, CPEng, PMP

Contact Ravinder

How we support your geotechnical and tunnel goals

Aerial view of Kurram Tangi Dam construction site in Pakistan, surrounded by hills and sparse vegetation.

We deliver best‑fit solutions tailored to each client’s needs. Our experience spans investigation, design, and construction services across diverse environments—from remote and challenging locations to major, densely populated urban centers—covering road and rail tunnels, as well as water conveyance systems. 

Supporting Clean Energy and Water Infrastructure 

We support public and private sector clients in advancing renewable energy and water infrastructure, including geothermal systems, hydropower, and utility networks. Our services extend across the full lifecycle, from geological investigations and environmental due diligence to system design and construction support. 

Advanced In‑House Laboratory and Field Services

Our geotechnical laboratory offers comprehensive testing services, including specialized testing for tunnelling using NATM, Cut‑and‑Cover, and TBM methodologies. We conduct detailed soil and rock testing to support informed decisions and the safe, efficient delivery of large‑scale transport and water infrastructure. 

Supporting Growth with Sustainable Solutions

We lead in underground engineering and brownfield redevelopment. Our approach promotes efficient land use, minimize environmental impact, and strengthen/ enhance long‑term Infra resilience across transport and water systems. 

Upgrading Aging Infrastructure

CDM Smith specializes in the assessment and rehabilitation of critical infrastructure across roads and water networks, enhancing safety, performance, and capacity. Through trenchless technologies and advanced tunnelling methods—including TBMs and micro‑TBMs—we help deliver resilient systems prepared for future demands. 

Related Practices

Supporting practices that enhance project outcomes across the lifecycle.

Water Conveyance

Whether you’re concerned about keeping existing water conveyance assets healthy or building new ones, we’re here to help you find the answers you need.

Roads Design

End-to-end roads and highway design delivering safe, efficient, and future-ready transportation networks.

Sewerage, Drainage and Irrigation

Integrated sewerage, drainage, and irrigation solutions that support public health, climate resilience, and sustainable urban growth.
Abstract digital network with glowing blue and green nodes and lines.

Ready to Take the Next Steps? 

We love collaborating with passionate individuals and organizations. If you're interested in joining our team, check our careers page for open positions or internships.