After converting the US, Parsons Brinckerhoff (PB) is spreading its gospel around the world. A leading transportation engineering firm, the company provides project management, architectural, design, and other technical services for infrastructure projects in about 80 countries. PB specializes in transportation projects, but also works in the environmental, water, energy, urban development, and telecommunications sectors. It serves both public and private clients. Founded in 1885, the firm designed New York City's first subway. It operates from about 150 offices spanning five continents. PB is a subsidiary of UK construction giant Balfour Beatty.