OUR PARTNERS

Rinker Design Associates (RDA), founded in 1982, is a multidisciplinary civil engineering firm with a long-standing presence across the mid-Atlantic region. They provide comprehensive services spanning transportation, traffic, utilities, structures, site and infrastructure design, geotechnical engineering, surveying, and environmental and construction support. Their team of engineers, surveyors, and environmental professionals delivers practical, high-quality solutions that align with regulatory requirements and community planning goals. A strong base of repeat clients reflects their consistent, reliable service.

RDA approaches each project as stewards of the land, translating client vision into functional, sustainable outcomes that support long-term community development. As part of Trilon, they strengthen our ability to deliver integrated infrastructure solutions that improve mobility, resilience, and environmental performance across the regions we serve.