Kimley-Horn and Associates, Inc.

Kimley-Horn and Associates, Inc. is a planning, engineering, and design consulting firm serving public and private sector clients. Founded in 1967 as a partnership by transportation engineers Bob Kimley and Bill Horn, the firm provides integrated infrastructure planning and design solutions for projects ranging from local developments to national initiatives.

The firm employs nearly 10,000 people across more than 150 offices throughout the United States. Its technical work spans planning, engineering, design, transportation engineering, highway design, civil engineering, environmental consulting, and landscape architecture, applied across sectors including transportation, infrastructure, land development, and civil engineering. More than 90% of its work comes from repeat clients.

Internally, Kimley-Horn describes a people-first approach built on structured mentoring, clear career paths, and ownership of meaningful work. The firm emphasises collaboration, innovation, and leadership at every level alongside a focus on client service and creative, expert-backed solutions.