Founded in 1989, TPD is an ENR 500 Top Design Firm, delivering projects throughout the eastern United States.
Transportation Planning & Permitting
Having provided over 3,000 studies for a vast array of clients, TPD has established a reputation throughout the eastern United States, as a leading specialist in Transportation Planning.
Bridge Design & Inspection
TPD’s Structures Design Team has demonstrated success in delivering structure projects for construction, including bridge superstructures and substructures, culverts, retaining walls, and noise walls.
Traffic Signal & ITS Systems Design
TPD has established itself as an authority in traffic signal design and ITS signals system operations, intimately familiar with the broad range of services required to successfully complete signal-related projects timely and efficiently.
TPD’s Highway Design Department has existed since the firm’s inception in 1989. The firm’s designs are woven into the fabric of the geographic areas the firm serves.
TPD assists municipalities and their residents to overcome complex challenges and serve as a true partner with respect to our client’s municipal needs.
Construction Management & Inspection
TPD’s Construction Services Team is comprised of qualified and certified individuals possessing specialized construction oversight and inspection expertise, design experience, and highly developed management systems to provide our clients with a complete project resource.
Multimodal, Complete Streets, & Mobility Services
TPD provides planning and engineering services that go beyond the traditional transportation focus on ‘motorized’ vehicle capacity.
Environmental Services & Permitting
TPD has provided Environmental services for public and private sector clients related to Transportation Engineering projects since its inception in 1989.
Expert Witness Support for Crash Investigations
TPD has extensive Expert Witness Testimony experience, having worked on over 200 accident cases.