McMillen Jacobs Associates is a multidisciplinary firm, with self-performing design-build capability. We are experts in tunneling and water resources and deploy this expertise to serve water, dams, energy, wastewater, transportation, aquaculture, federal, private, and regulatory clients using a wide range of delivery methods. For a combined total of 75 years we have worked closely with our clients at every stage of a project, assisting them with planning, permitting, design, project management, construction, and start-up.