Underground & Tunnel Construction

Underground construction requires deep foundation and earth retention expertise for tunnel portals, cut-and-cover subway stations, underground parking structures, and utility vaults. Secant pile walls and slurry (diaphragm) walls are commonly used to create water-tight perimeters for underground structures. Jet grouting and ground freezing stabilize soil ahead of tunnel boring machines. Micropiles and drilled shafts support tunnel ventilation buildings, emergency exits, and surface structures above tunnels. The intersection of deep foundations and tunneling creates some of the most technically challenging projects in civil engineering — requiring expertise in soil-structure interaction, groundwater control, and construction sequencing.

Common Foundation Methods

Industries Served