Brierley Associates is a privately-held national tunnel, trenchless, geotechnical, and geo-structural design firm with offices strategically located across the United States. With over 60 underground  engineers and geologists, Brierley Associates has a long history of delivering recognizable value to our clients by providing cost effective and constructable solutions for underground and heavy civil infrastructure projects.

Our team understands that planning, design, and construction of subsurface projects is a complex mixture of client needs, contractual preferences, risk allocation, third party requirements, design criteria, and subsurface conditions.

The nationwide and international underground project knowledgebase of Brierley Associates is key to anticipating ground behavior and helping our clients with design and construction of successful projects which is the cornerstone of Brierley’s business vision to… “Create Space Underground”.

Press Room

Checkout out our Press Room for past issues of our In Depth Newsletter and published papers and articles.

Nick Strater – CUIRE Geotechnical Course Instructor at UCT Conference – Ft. Worth,Texas

Brierley Associates’ Trenchless Leader – Nick Strater will be one of the instructors at the Geotechnical Training School sponsored by Center For Underground Infrastructure Research and Education (CUIRE) . The Training School has become an annual event and is held prior to the  Underground Construction Technology International

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InDepth December 2016

In This Issue…. Read about our work with Wyoming Abandoned Mine Lands Program to assess hazards associated with mine collapse and development of  innovative grout mixtures to mitigate mine subsidence. George A. Fox Conference This annual conference is slated for January 24, 2017 in New York City.

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ASCE Mohawk-Hudson Section Capital Region Geosymposium

Brian Dorwart at Geosymposium Brierley Associates is a sponsor of the 2016 ASCE Geosymposium to be held on November 18 at Rensselaer Polytechnic Institute in Troy, NY.  Our own Brian Dorwart will present the background, design and construction of the record holding 3,000-ft long HDD installation of  54-inch diameter

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2016 – Cutting Edge Tunneling Conference

Brierley Associates – Silver Sponsor Brierley Associates is a Silver Sponsor of the 2016 Cutting Edge – Advances in Tunneling Technology conference that will be held next week November 6 – 9 at The Concourse Hotel at Los Angeles International Airport.  The program features technical sessions hosted

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InDepth September 2016 Available in our Press Room

Featured Articles  World Record HDD installation of 54-in diameter HDPE set in City of Miami Beach,Florida Click here to check out our YouTube  page to see videos of the HDD process, don’t forget to turn on the speakers. Tapping Lake Travis,Texas for water supply needs River Supply

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New Hampshire

New York






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Brierley Associates is a self-certified Federal Small Business