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.

Brierley Associates Update

Brierley Associates extends our best wishes to Ray Henn in the founding of RW Henn LLC, effective September, 2015.  Ray has been an important part of Brierley Associates for the past 5 years.  We appreciate the mentoring that he has provided our staff in the Denver office;

Ray Henn to lead I-70 Twin Tunnels Tour

Twin Tunnels Tour – Monday September 21, 2015 Ray Henn, PhD –  in conjunction with Colorado Department of Transportation will lead a bus tour to the I- 70 Twin Tunnels.The Eisenhower-Johnson Memorial Tunnels are dual-bore, four lane vehicular tunnels approximately 50 miles west of Denver. At an

Mike McTeer Brings BIM to Brierley

Brierley Associates and Mike McTeer Consulting (MMC) have merged to expand Brierley’s Building Information Modeling (BIM) capabilities. BIM is an intelligent model-based design process that adds value across the entire lifecycle of infrastructure and building projects. Virtual Design and Construction BIM has proven to reduce costs by

Brierley Associates at– NASTT 2015 Denver

2015 No-Dig Show Papers by Brierley Associates Brierley Associates presented the following at the 2015 No-Dig Show in Denver. Please visit our Press Room to read these papers. Grout Engineering for Directional Drilled Bores         Brian Dorwart – Presenter Grouting of horizontally directional drilled

Award News – Twin Vehicular Box Tunnels, Liberty University

Brierley Associates unique approach to box tunnel design and construction continues to receive recognition. ENR Mid-Atlantic Region held its annual Best Project Awards ceremony on December 12, 2014 at the Baltimore Hyatt Regency. Each award winner was recognized during a multi-media slide show and narrative produced by