The proceedings, ""Computational Intelligence: From Theory to Practice"", includes papers presented at the 2004 ASCE Information Technology Symposium, held in conjunction with the 2004 Civil Engineering Conference and Exposition in Baltimore, Maryland from October 20-23, 2004. This collection of papers represents the many applications of computational intelligence in civil engineering practice. It discusses the bridge between the theory and practice of computational intelligence issues for a better understanding of the correct application of these tools to civil engineering practice. The papers cover such topics as neural networks, genetic algorithms, evolutionary algorithms, complex systems and cellular automata.