HNTB experts provide innovative solutions for a wide range of tunnels, including cut-and-cover tunnels, tunnel boring machine tunnels, conventional tunneling, sequential excavation method (SEM) tunnels, immersed tube tunnels, shaft construction and micro-tunneling.
Our long and proven history in planning, program management, design, construction management and technical services for tunnel and complex underground structures has resulted in a number of award-winning projects on some of the country’s most challenging programs for transportation infrastructure.
Tunnels
Solutions
HNTB's capabilities cover a broad range of services and expertise that help our clients and communities meet their goals.
