Background Constantine Engineering Associates, LLC (CEA), and its predecessor firms CRG Engineering, Inc., and Engineering Design & Consulting, Inc, have designed numerous projects in both the public and private sectors over the past 28-years. Our professional services have encompassed a variety of project types including medical healthcare, educational, assisted living, municipal, historical, commercial, institutional, residential, and hospitality. We enjoy a very positive reputation due to our staff’s client relationships and level of service.