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Comprehensive Engineering

From initial environmental studies to construction management and materials testing at completion, we offer fully comprehensive engineering services for a wide range of projects.

Quality Work

We’re passionate about ensuring safe, efficient mobility and infrastructure for the communities we serve. Our experienced team delivers innovative, cost-effective services every day.

Trusted Advisors

Our clients depend on us to provide quality engineering services with cutting-edge innovation to enhance the safety, mobility, quality of life, and economic vitality of their community.

Innovative & Specialized Solutions

EST is committed to providing our clients with innovative and specialized solutions that are tailored to their specific needs and challenges. When you work with EST, you receive commitment to excellence on every project.

Professional. Experienced. Trustworthy.

We’re passionate about ensuring safe, efficient mobility and infrastructure for the communities we serve.

Our staff of seasoned experts serves as a one-stop shop by providing the full spectrum of civil engineering services from a project’s inception with environmental studies to the construction management and materials testing at the project’s completion. We eliminate the need for a middleman and provide our clients with a simple, cost-effective process for every project.

Guided by our core values of honesty, integrity, and professionalism, we approach every project with enthusiasm, commitment, and pride of workmanship. Whether you need support for inspecting and maintaining existing infrastructure or projecting and planning for future growth, we’re here to help.

What People Are Saying

“Our assessment of their activities and personnel is that EST strives to exceed client expectations by exploring and recommending best practices which are advantageous, both functionally and economically. Their projects are on-time, on-budget, and accurate. Their personnel are professional in their dealings with the Tribe.”

Bill Blankenship

Transportation Director, Choctaw Nation of Oklahoma

“EST has demonstrated over the years that they are a technically-competent team and have had outstanding employees perform numerous projects for the City of Moore. Their team performed in a professional manner in all aspects of their work and treated the stakeholders, clients, and team members with integrity and respect. Based on my experience, I would highly recommend EST, Inc. to anyone desiring a business relationship with a dependable, dedicated team of professionals.”

Stephen O. Eddy

Former City Manager, City of Moore, OK

“EST, Inc. has provided asphalt testing and quality control services for our annual QC for our asphalt plant along with several specific project for our company. We are pleased with the efficient, diligent work ethic they bring to every project. Also, their engineers and staff are attentive and quick to communicate with our company anytime. We hope to continue working with EST on future materials testing projects. We also highly recommend their quality control work to others in the industry.”

John Mayfield

President, Schwarz Paving Co. Inc.

Our Locations

EST has offices throughout Colorado, Oklahoma, and Texas. Click on a state to view office locations.

Contact Us

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Corporate Headquarters

615 N Hudson Avenue, Suite 300 Oklahoma City, OK 73102

(405) 815-3600

(405) 815-4080