Our Growth

In 1951 Charles F. Ripley, a Harvard-trained soil mechanic engineer formed Ripley & Associates. The following year he hired Earle Klohn and Cyril Leonoff who went on to offer their clients engineering specialists in soil mechanics and went on to develop significant relationships with key clients. For example, Ripley and associates provided foundation engineering for major pulp mill expansions for H.A.Simons, which led to a long term relationship and eventual integration.

Kitimat Aluminum Smelter, BC, Canada – Ripley & Associates. Foundation design for heavy industrial foundations.

In the 1970's Ripley & Associates was renamed Klohn Leonoff Consultants Ltd. and the company integrated water resources, mining and environmental services with the traditional geotechnical services and expanded into overseas markets.

Gibraltar Tailings Dam, BC, Canada – Klohn Leonoff Ltd. One of the first cycloned sand dams in the world.

Meanwhile, in 1954 Glen Crippen, a water resources engineer, formed Crippen Wright Engineering, later renamed G.E. Crippen and Associates. In 1982, the company acquired CBA Engineering and expanded into the transportation sector.

Alex Fraser Bridge, Vancouver, Canada – Crippen Consultants

Maduru Oya Irrigation Project, Sri Lanka -Klohn Leonoff/Crippen Joint Venture

In 1986 H. A. Simons diversified and bought Crippen Consultants, and in 1993, employees of Klohn Leonoff and Crippen, together with the Toronto Divisions of H. A. Simons, joined to form Klohn Crippen Consultants Ltd., a fully-integrated multi-disciplinary services company, with offices across Canada and in Peru and Australia.

Antamina Mine – Environmental Impact Assessment, Peru – Klohn Crippen Berger, Mining Environmental Group

In 1999 Klohn Crippen Consultants Ltd. established a strategic partnership with the Louis Berger Group Inc. (LBG) to expand its global services. LBG is a major international consulting firm in the business areas of: transportation, environment and infrastructure.

In 2006, Klohn Crippen Consultants Ltd. became Klohn Crippen Berger Ltd. (KCB). The name change reflects the strength and success of our partnership with The Louis Berger Group Inc.

Oil Sands Tailings Project, AB, Canada – Klohn Crippen Berger, Alberta Group

San Francisco Bay Bridge, structural and geotechnical design for the temporary works for the signature span in San Francisco Bay - Klohn Crippen Berger - Power & Transportation Group

KCB continues to expand through mergers with other companies and development of joint venture companies. In 2006 KCB merged with IEG Consultants. The IEG merger was then expanded to include a new joint venture in the Canadian North with the Inuvialuit Development Corporation. In 2007 Mack, Slack & Associates joined KCB. In 2009, the IEG Nunasi joint venture company was formed to service projects in Nunavut, Canada. In 2009, Klohn Crippen Berger merged with Ecomark Ltd., an environmental services firm in Edmonton.