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Arias & Associates, Inc. (dba Arias) is a private corporation formed in 1996 by San Antonio native, Robert P. Arias, P.E. Since its humble inception over 27 years ago, Arias has grown into one of the premier engineering firms in Texas. To date, we have completed over 13,500 Geotechnical Engineering and Construction Materials Testing projects across the State of Texas.

what we do.


WE do IT.


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Arias' first and foremost mission is to serve our clients quickly and accurately by providing optimum Geotechnical Engineering and Construction Materials Testing Services along with unbeatable client care. By doing this over the last two decades, we have established long-term client relationships which have provided the opportunity to help our clients design and construct successful projects. Our clients continue to request our services because we provide extraordinary care, outstanding performance, and superior service.
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"Arias is reliable and provides excellent customer service. In addition, they have provided me and my staff with problem solving solutions in time of need and communication skills to implement their resolutions. As a firm, Arias possess the skills and expertise to get the job done on time and within budget."


jesse garcia

Bexar County Public Works Department
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"What has made the On-Call Geotechnical and Material Testing Services contract successful is Arias’ ability to work with various management styles and on projects that often have unique site conditions with multiple stakeholders. Timely reporting and providing accurate technical expertise are paramount when working on public projects and Arias has been able to maneuver through various plans and specification requirements."


leAnn lindquist-thome

City of San Antonio
Public Works Department

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