Douphrate & Associates Inc

Centerline is an engineering and land surveying company serving cities across Texas. We focus on empowering our teams, being responsive to our clients, and delivering high-quality work through innovation.

Centurion is a DBE-certified, woman-owned firm whose sole focus is providing superior aviation consulting services for airports in the FAA’s Southwest Region and surrounding states. We are experienced professional planners, engineers, and surveyors with 35 years’ experience, providing solid solutions to meet our client’s needs - remaining engaged throughout the project lifecycle, committed to improving the communities and airports we serve. One of our key strengths lies in our ability to move projects from concept to funding. With a strong NEPA background and focus on tailoring individual airport needs, we have successfully justified federal or state grant funding for airport projects through master plans, and other focused studies.

Platinum Engineering is a North Texas firm delivering precision aerial imaging & thermal diagnostics, RPLS-led surveys (ALTA, boundary, topographic), and turnkey civil engineering design (P.E.-driven). We provide CAD/GIS-ready data and plan sets with rapid turnaround.