Terry A. Ruhl

The American Society of Civil Engineers, founded in 1852, is the oldest national engineering society in America. The non-profit company is based in Reston, VA and has subsidiaries in the United States. With over 150,000 members worldwide, the organization advocates for sustainable and resilient practices to maintain and modernize the nation's infrastructure. The company also works to increase investment in infrastructure and improve engineering knowledge and competency. The society's Civil Engineering Landmark Program recognizes historically significant civil engineering projects, structures, and sites.

H.W. Lochner, Inc. provides transportation engineering services. It offers civil and structural engineering, project management, planning, environmental and construction services. The firm provides aviation, environmental, roadway, rail, transit, planning and structures services. The company was founded in 1944 and is headquartered in Chicago, IL.

CH2M HILL Cos. Ltd. provides consulting, design, design-build, operations and program management services. The company offers its services to the government, civil, industrial and energy clients. Its work is concentrated in the areas of water, transportation, environmental, energy, facilities and resources. The company was founded by Holly A. Cornell, James Howland, Burke Hayes and Fred Merryfield in 1946 and is headquartered in Englewood, CO.

CH2M HILL, Inc. provides engineering services. It operates and design buildings, consulting, and program management for government industry and energy clients. The company was founded in 1946 and is headquartered in Englewood, CO.