Sterling operates through a variety of subsidiaries within three segments specializing in E-Infrastructure, Transportation and Building Solutions in the US, primarily across the Southern, Northeastern, Mid-Atlantic and the Rocky Mountain States, California and Hawaii. E-Infrastructure Solutions projects develop advanced, large-scale site development systems and services. Transportation Solutions includes infrastructure and rehabilitation projects for highways, roads, bridges, airports, ports, light rail, water, wastewater and storm drainage systems. Building Solutions projects include residential and commercial concrete foundations for single-family and multi-family homes, parking structures, elevated slabs and other concrete work. From strategy to operations, co. is committed to sustainability.