Founded in 1989, TPD is a multi-disciplined A/E/C firm with offices in Pennsylvania, New Jersey, Maryland and North Carolina. TPD exists to improve the quality of life for the public; the firm works toward this mission by providing the following services to a range of public and private sector clients throughout the eastern US: highway design; bridge design & inspection; transportation planning & permitting; traffic signal & ITS systems design; construction management & inspection; environmental services & permitting; multimodal, complete streets & mobility services; landscape architecture & planning; transportation management & operations; and expert witness support for crash investigations.