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.

Engineering Geology for Subsurface Works Lecture Series – November 21, 2019

Engineering Geology for Subsurface Works Colorado School of Mines-Student Center Ballroom-Golden, CO Join  Dr. Mole, Inc. and the Association of Environmental & Engineering Geologists (AEG) on November 21, 2019 at 6:00 PM in the Colorado School of Mines Student Center Ballroom for this informative session that will include: Dr.

Upcoming Fall 2019 Tunnel Conferences Sponsored by Brierley Associates

12th Annual Breakthroughs in Tunneling Short Course – University of Denver,CO Main Event Sponsor -Brierley Associates The 12th Annual Breakthroughs in Tunneling Short Course will be held September 9-11, 2019  at the University of Denver – Joy Burns Center.  Brierley Associates’ Gregg Sherry and Dr. Mole – Gary