For over 130 years, PSI has been providing engineering, consulting and testing services to the transportation industry. We have proven and successful experience servicing all facets of transportation including highways, roads, bridges, ports, harbors, rail and aviation. PSI understands the unique challenges and pressures facing the transportation industry and how to best assist our clients with solutions to make their projects a success.

PSI is a nationally recognized provider of One Company, One Call services to the transportation industry. We are a leader in providing environmental consulting, geotechnical engineering, construction materials testing & engineering, industrial hygiene services, facilities & roof consulting, and specialty engineering & testing services.

Regardless of the project size or sector of the transportation industry requiring our services, PSI delivers a variety of required engineering, consulting and testing services to support site selection, design, construction, and property management. We have significant and proven experience working with the entire transportation team from city and municipal government entities, Port Authorities, DOTs and Federal agencies to other large A/E/C firms, prime consultants, PPPs and design-builders.

Whether you are constructing a new road, bridge, rail line or runway; or repairing or maintaining vertical or horizontal components; or have an environmental, asbestos, industrial hygiene, roof or pavement issue; PSI has the expertise, resources and professionals ready to work hard for you to deliver the results and Information To Build On you expect.