GDA Revenue and Competitors

We are excited to announce GDA has joined forces with T-O Engineers. This combination unites two industry-leading companies with complementary capabilities, cultures, and relationships. This expansion allows both firms to provide a broader range of services and solutions to clients in the Northwest, as well as the Rocky Mountain Region. Together, T-O Engineers provides a full suite of services including aviation, transportation, land development, geospatial services, wastewater, water resources, municipal, surveying, landscape architecture, and environmental. With over 130 professionals throughout seven offices located in Idaho, Washington, Utah, and Wyoming, clients will receive the responsive, personalized service you expect from a local company while providing the expertise and network of contacts you would expect from a large firm. We welcome you to learn more about our great company, www.to-engineers.com, as our path moves forward.