Halvorson and Partners, a WSP | Parsons Brinckerhoff Company specializes in the design of projects that include skyscrapers, long span structures, and projects on challenging sites. It offers design services that include office, residential / hotel, education, civic, retail, mixed use, renovations / additions, and special structures, and additional design services that include adaptive reuse / tenant modification. The company is based in Chicago, Illinois. As of September 1, 2015, Halvorson and Partners, a WSP | Parsons Brinckerhoff Company operates as a subsidiary of Parsons Brinckerhoff Group Inc.