Certerra

In 1962, RMA Companies was founded in California and spent the next five decades building a reputation as an independently successful geotechnical and materials engineering firm based on deep expertise and local knowledge. The founders saw an opportunity to grow into highly resilient end markets driven by infrastructure spending, expanding nationally by adding specialty services in materials engineering and earth sciences.

To achieve this vision, the company secured strategic investment and embarked on a journey that would transform the regional firm into a national leader. Through a series of strategic acquisitions, Certerra brought together a network of strong regional competitors, each bringing decades of experience, unique capabilities, and long-standing relationships. This consolidation created a leading national brand committed to service, innovation, and client success.

Today, Certerra provides technology-enabled testing, inspection, and certification services to assure quality and advance innovation in critical infrastructure. The company's network of offices and laboratory facilities pairs local expertise with specialized capabilities and national scale. With over 1,800 employees across 50+ nationwide locations and 70+ years of combined experience, Certerra serves multiple industries including transportation, education, government, healthcare, industrial, manufacturing, power and energy, and commercial sectors. The company is ranked on ENR's Top 500 list and continues to expand through strategic acquisitions, delivering what they call 'Materially Better' outcomes for communities across North America.