Stacy and Witbeck is a well-established construction and engineering firm in the United States that specializes in the construction of transportation infrastructure projects, particularly in the field of light rail, commuter rail, and urban transit systems. The firm is known for its expertise in building various forms of transportation infrastructure, including light rail, commuter rail, streetcar, and other urban transit systems. They are involved in the construction of tracks, bridges, stations, and related facilities. Stacy and Witbeck have been involved in a wide range of high-profile transportation projects across the United States. These projects often include urban transit expansion, modernization, and construction of new rail systems.