Tunnels & Underground Construction

Description of Services

Reliance Engineers offers tunneling expertise grounded in both design and construction experience across a wide range of geological conditions and project types. Our team has worked on tunnel systems in hard rock and soft ground, as well as combined sewer overflow tunnels, immersed-tube tunnels, cut-and-cover structures, and NATM applications. In addition to transit and utility tunnels, we have delivered underground design solutions for complex structures such as multi-level parking facilities, subway stations, and deep drop shafts. We bring a practical understanding of tunneling methods, ground behavior, and construction staging to support safe, efficient, and cost-effective delivery of underground infrastructure.

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