Brierley Associates is a privately-held national tunnel, trenchless, geo-structural and geotechnical design firm with offices strategically located across the United States. With over 80 underground  engineers and geologists, Brierley Associates delivers 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.

Brierley Associates’ nationwide and international underground project knowledge-base 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.

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

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

Tunneling Short Course – September 2016 at University of Colorado, Boulder

Brierley Associates is the Main Event Sponsor for the annual Tunneling Short Course, led by the original instructors Levent Ozdemir and Timothy Coss. This year, the course will be held at the state-of-the-art facilities at the University of Colorado, Boulder. Undoubtedly the most recognized and comprehensive tunneling short course in

Tunnel Achievement Award Winner – Lake Mead Intake No. 3

Congratulations to all Lake Mead Intake No. 3 Team Members on this award that was announced in the July 22, 2016 issue of Tunnel Business Magazine. Years in the making, this project created a new intake at the bottom of Lake Mead that would allow water supply to

Dorwart and Strater – Speakers at Upcoming ASCE Pipeline Conference

    Brian Dorwart and Nick Strater will both be speaking at the at the Manual of Practice for Horizontal Auger Boring Projects Workshop on Sunday July 17, 2016 in Kansas City. Their topic is Geotechnical Investigations for Horizontal Auger Boring projects. Nick serves on the Manual of