Orion Group Holdings, Inc. is a specialty construction company serving the infrastructure, industrial, and building sectors in the United States, Canada, and the Caribbean Basin. It operates through two segments, Marine and Concrete. The Marine segment covers construction, rehabilitation, and maintenance of marine transportation facilities, foundations, underwater pipelines, overwater bridges, and environmental protection structures, along with dredging and specialty services such as salvage, demolition, and underwater inspection. The Concrete segment provides concrete construction services for data centers, industrial and commercial facilities, and institutional and mixed-use structures. The company was formerly known as Orion Marine Group, Inc. and changed its name to Orion Group Holdings, Inc. in May 2016. It was founded in 1994 and is headquartered in Houston, Texas.