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At CTL|Thompson, we have been providing innovative engineering solutions throughout the Rocky Mountain Region and beyond since 1971. We regularly provide geotechnical design and construction criteria as well as construction observation and testing services for residential developments, commercial buildings, industrial facilities, retail outlets, shopping centers, mining facilities, and infrastructure including dams, water treatment facilities, and road construction.

Our award-winning firm offers geotechnical, materials, environmental, and structural engineering services, construction observation, soil and materials testing. With experts in Colorado, Wyoming and Montana, our thorough and thoughtful team of engineering consultants and field technicians can identify potential design and construction-related issues in commercial, residential and industrial projects and recommend sound engineering solutions - saving clients time, and more importantly, money.  ​


Our staff of engineers, geologists and scientists are seasoned professionals with backgrounds in geotechnical, civil, environmental and structural engineering, industrial hygiene, biology and geology. With such diverse resources, CTL|Thompson has built time-tested trust with our technical excellence, industry experience, high standards of performance and professionalism.​

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To build a Trusted team that helps clients succeed with Thorough, Thoughtful, Time-Tested Solutions.



We have high expectations of what people can do and hold each other to high standards of performance.

Technical Excellence

We are committed to improving our capabilities and technical skills to deliver practical solutions and services.



We expect conduct characterized by personal and professional honesty, integrity and ethics.

We demonstrate respect for clients, other employees and designers, contractors and the public; and we seek their respect.


We thoughtfully utilize, invest and conserve company resources to enhance our future.

About our company

CTL|T recently celebrated 50 years in business, please join us in looking back at some of the major milestones that have led us here today.

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