Valparaiso-based Smith Ready Mix is planning to construct a new concrete batch plant in St. Joseph County. The company will invest $2 million to build the facility in an industrial area being developed by the county near New Carlisle. The plant is expected to open this summer and create 15 jobs. In March, the St. Joseph County Council changed the zoning of the property from agricultural to manufacturing in order to accommodate Smith Ready Mix’s plans. The company also has plants in Valparaiso, East Chicago, Cedar Lake, Schererville, Chesterton, Westville and DeMotte.