David Mason + Associates (DMA)
Civil EngineeringMissouri, United States51-200 Employees
David Mason + Associates (DMA) is a civil engineering professional services firm established in 1989 and based in St. Louis, Missouri. The company employs 51 to 200 staff and operates with offices in St. Louis, Chicago, Philadelphia, and Tampa, with a 2024 expansion adding an office in Indianapolis, Indiana. DMA is a minority-owned business enterprise (MBE) offering planning, design, management, and inspection services across projects such as new facilities and infrastructure, renovations and expansions, utilities, tunnels and subsurface structures, stormwater management, and site development. Its client sectors include healthcare, commercial and institutional, aviation, education, parks and recreation, public and civic, utilities, and water and wastewater. The firm has received industry recognition, including being named a 2018 Businesses of the Year in St. Louis.