Building Better Communities SAI is a fully integrated heavy civil construction company that serves the DFW Metroplex and surrounding areas. We specialize in water, sewer, and storm installation along with asphalt and concrete paving construction. At SAI, the quality of our work is evident by the number of repeat customers and ongoing work in some of the largest municipal and private development projects across North Texas. We are proud to be a part of building the community in which we live.