Sterling Construction Co., Inc. is a heavy civil construction company, which specializes in the building, reconstruction and repair of transportation and water infrastructure projects. Its transportation infrastructure projects include highways, roads, bridges, airfields, ports and light rail. The company's Water Infrastructure projects include water, wastewater and storm drainage systems. Sterling also provides general contracting services, including excavating, concrete and asphalt paving, installation of large-diameter water and wastewater distribution systems, construction of bridges and similar large structures, construction of light and commuter rail infrastructure, concrete and asphalt batch plant operations, concrete crushing and aggregates operations. It serves county and municipal public works departments, regional transit and water authorities, port authorities, school districts, and municipal utility districts. The firm operates through two segments: Heavy Civil Construction and Residential Construction. Sterling Construction was founded in 1991 and is headquartered in Houston, TX.