Aecon Group, Inc. engages in construction and infrastructure development. It operates through Construction and Concessions segments. The Construction segment includes all aspects of the construction of both public and private infrastructure, primarily in Canada, and on a selected basis, internationally. The Concessions segment focuses in the development, financing, construction, and operation of infrastructure projects by way of build-operate-transfer, build-own-operate-transfer, and other public-private partnership contract structures. The company was founded by Adam Clark in 1877 and is headquartered in Toronto, Canada.