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HNTB

HNTB experts have the insight on tunnel ventilation and safety and knowledge to provide innovative solutions on a wide range of tunnels, including cut-and-cover, tunnel boring machine tunnels, conventional tunneling, NATM, immersed tube tunnels, shaft construction and micro-tunneling.

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Featured Tunnel Projects

Alaskan Way Viaduct Replacement Program
Alaskan Way Viaduct Replacement Program
Crenshaw/LAX Transit Corridor
Crenshaw/LAX Transit Corridor
Sound Transit’s University Link Light Rail Extension
Sound Transit’s University Link Light Rail Extension
Tom Lantos Tunnels
Tom Lantos Tunnels
Istanbul Strait Road Tunnel Crossing
Istanbul Strait Road Tunnel Crossing
Elizabeth River Tunnels
Elizabeth River Tunnels

Tunnel News and Insights

Emerging Technologies in Tunnels

Anthony Bauer and Mike Wongkaew discuss large-diameter TBM tunneling, hyperloop and tunnel lining design. Read more.


A Conversation with Sanja Zlatanic and Civil + Structural Engineer

Sanja Zlatanic has made her name working on the industry’s premier tunneling projects over the last three decades. Read more.


Deep Thinking – Underground Solutions

Sanja Zlatanic, national tunnel practice leader and HNTB Fellow, addresses the future of tunnel infrastructure solutions in dense urban areas. Read more.


Insights Into Tunnel Industry Trends

How using bored tunnels may minimize construction impacts to streets, utilities, businesses and communities. Read more.


Best Practices for Long Transit and Rail Tunnels

Bernd Hagenah takes a look at what transportation agencies need to consider as they explore tunnel options to improve mobility.


 

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