From airports to campuses to utility networks, we engineer the systems communities rely on every day. Our work spans environments that demand precision, resilience, and long‑term performance. Each project reflects our commitment to designing infrastructure that supports growth and strengthens the places people live and work.
We understand the unique challenges that define every industry we serve. Whether navigating the complexities of transportation corridors or the evolving needs of institutional campuses, our teams bring the insight required to deliver solutions that last. We approach each environment with a clear understanding of its operational, regulatory, and community context.
Our experience extends across markets where reliability and safety are non‑negotiable. We collaborate closely with clients to anticipate needs, manage constraints, and ensure that every system functions as intended. That partnership‑driven approach allows us to support both everyday operations and long‑term strategic goals.
Across all industries, we bring the same focus on clarity, coordination, and technical excellence. Our teams work seamlessly across disciplines to deliver infrastructure that performs under pressure and adapts to future demands. It’s a model that has helped DMA support critical systems for more than three decades.
DMA has been solving complex engineering challenges since 1989. Our multi‑disciplined team brings the experience and adaptability today’s projects demand. We’ve earned trust by delivering consistent results across a wide range of markets.
We offer a full suite of services that support infrastructure at every stage of development. Each project benefits from technical depth, thoughtful planning, and a clear understanding of client priorities. Our solutions are built to perform in the real world, not just on paper.
We meet clients where they are and guide projects forward with clarity and purpose. Our teams work seamlessly across disciplines to ensure efficiency and quality. It’s a model that has defined DMA for more than three decades.
DMA’s commitment goes beyond delivering projects — we build long‑term partnerships rooted in trust, communication, and accountability. We take pride in being responsive, transparent, and proactive at every stage of the work. That mindset drives our team and shapes the way we serve clients across the country.
“David Mason has always had an entrepreneurial spirit. Starting his own business as a teen, washing cars in his home driveway, he knew from an early age that he liked working for himself. After he graduated from Washington University and working for a few other architects, he decided to move out onto his own at just 27.
“Today David Mason & Associates, which started as a two-person firm, has a little over 160 employees, a home office is in St. Louis and offices in Chicago, Philadelphia and Kansas City. The firm, which started as an architecture firm, is now focused on infrastructure engineering with architecture that supports its engineering practice. “Twenty five years ago, I looked around the country and saw that the infrastructure of the country would be in need of improvements,” says Mason. I knew there would be demand for roadways, sewers, bridges, power and utility systems. I had a personal background in architecture. I worked as a teen doing surveying for my Uncle’s construction company in Cleveland, Ohio and also did carpentry work with him. That molded what I wanted to do with architecture. Architecture was an adjunct to working in the built environment.” While growing is company over the years, Mason remains actively involved in both its work and client relationships. “I am on the road a lot because we have different offices,” he says. “I am building new relationships and maintaining the existing. Since I am also technical, I do still work on presentations and projects. That all keeps me busy.”
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