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.

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

InDepth March 2017

In This Issue…. Reclaimed Water System Improvements – Austin, TX  CDOT Tunnel Inspection and Asset Management Services I-70 Twin Tunnels Expansion – ENR Best of the Best Award – 2016 Bridge/Highway Category Brian Dorwart, Nick Strater and Dave Sackett to be at  No-Dig in DC Mohamed Gamal to

Brierley Associates Welcomes Ike Isaacson

Milwaukee and Chicago Offices Open Brierley Associates announces the expansion of our Mid-west and tunneling operations to complement our existing Minneapolis, MN office and national tunnel sector practice.  We are pleased to introduce the opening of our new Milwaukee and Chicago office locations and the addition of

Brierley Associates at TTC Auger Boring School – February 13-17, 2017

Brierley Associates is a sponsor of the upcoming Auger Boring School to be held February 13-17, at Louisiana Tech University, Ruston, LA. This annual educational event is a joint effort between the Trenchless Technology Center (TTC) at Louisiana Tech and the National Utility Contractors Association (NUCA).  Its

Norfolk, Virginia Office Opens

Dave Sackett Joins Brierley in Norfolk, Virginia Brierley Associates celebrates the expansion into the Mid-Atlantic/Southeast region with the opening of our Norfolk, Virginia office under the management of Mr. David (Dave) Sackett, PG. Dave has more than 30-years’ domestic and international experience as a Geoscientist, and he