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.

Dam Safety 2017 in San Antonio-September 10-14

Next week the Association of State Dam Safety Officials will convene in San Antonio, TX, September 10-14.  Dam Safety 2017 is the leading conference in the United States dedicated to dam and levee safety engineering and technology transfer and will once again bring together nearly 1,000 individuals

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Brierley Associates at AEG Annual Meeting-September 10-16, 2017

 AEG Annual Conference Update Becky Brock will be presenting during Technical Session #10 Thursday September 14 Challenges of Inspecting Unlined Rock Tunnels Based on the New National Tunnel Inspection Standards In 2015, Congress mandated the inspection of all vehicular tunnels in the country on a regular basis.

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InDepth September 2017

The September  2017 issue of InDepth is available in our Press Room In this issue read about  Rockfall Mitigation Bellwood Quarry Reservoir, Atlanta GA AEG Annual Conference – September 2017 Intelligent Tunnel Design CASFM Conference – September 2017 Nick Strater Principal Author – Manual of Practice on Pilot Tube and

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Brierley Associates Main Event Sponsor – Breakthroughs in Tunneling Short Course

In celebration of the 10th Annual Breakthroughs in Tunneling Short Course, Brierley Associates is the Main Event Sponsor.  This years short course will be held August 14-16 in Chicago at the Embassy Suites O’Hare-Rosemont. For more information Click Here This years line-up of speakers includes Gregg Sherry

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InDepth June 2017

The June 2017 issue of InDepth is available in our Press Room In this issue read about 54-inch HDPE-HDD Project Honored in Miami ASCE – 2017 OCEA to San Diego County Water Authority New Manual of Practice – Pilot Tube and Other Guided Boring Methods Lymon C. Reese

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New Hampshire

New York






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