From six employees in Oaks, PA to a growing team with multiple locations, TPD has spent more than three decades expanding its capabilities while staying focused on the clients and communities we serve. Founded in 1989 by our current President, Kevin Johnson, PE, TPD began primarily as a traffic engineering firm with highway design support. Over the years, they expanded their services to include bridge design, environmental permitting, bridge inspection, construction management, and construction inspection, while continuing to strengthen their core expertise. Today, TPD operates as “One Company with Multiple Locations,” bringing together local knowledge, technical expertise, and a team-oriented approach to deliver quality, sustainable solutions for our clients and teaming partners.