Background: In the past, enterprises had no recognition of information integration and operated as independent units within a chain. As a result, most of the firms throughout the supply chain faced inadequate information sharing, lack of collaboration, and absence of compatible IT infrastructure. Theses three elements play a crucial role in information integration that assists companies’ goal congruence. In a highly competitive market, companies from different industries take these three elements into consideration in order to synchronize their activities. Nowadays, transportation industry plays a crucial role in all developed countries in order to fulfill the customer’s needs and act as a connection between manufacturers and consumers. Intermodal freight transportation is one of the elements of transportation industry that includes two main players - freight company and terminal operator. In this respect, it is essential to review theoretical framework and explore the practice of information integration within intermodal freight transportation. Hence, this study carries an investigation on information integration in accordance with theoretical framework from the perspective of the dyad that includes a freight company and a terminal operator. Purpose: The research defines the level of information integration within intermodal freight transportation. A freight company and a terminal operator are the players studied in this research. Three elements of information integration, which are collaboration, information sharing, and IT implementation and adaptation, are investigated in order to identify the level of information integration. The main objective is to understand the information integration and its level within the industry from a dyadic perspective. Method: This research is conducted from a positivist scientific perspective along with qualitative research method and deductive approach. The authors conduct the embedded multiple-case study with a dyadic perspective. In this context, the freight companies and terminal operators are the studied players within this research. In order to gather the empirical data, semi- structured interviews are conducted via telephone and email. Empirical data is analyzed by utilizing two different methods, which are within-case and cross-case analysis. Furthermore, ethical issues are considered in this research, based upon trustworthiness and accuracy. Result and Conclusions: The conclusion of this research is based upon within and cross case analysis. Three studied dyads have shown the same result of medium level, while one dyad has demonstrated high level of information integration. In this regard, each dyad has been rated separately in accordance with the theoretical framework that provides scale with low, medium and high levels regarding collaboration, information sharing, and IT implementation and adaptation in order to find the level of information integration. From the dyadic perspective and with help of cross case analysis, the level of information integration regarding the whole research population is defined at medium level. It is remarkable that obtained results, in accordance with the theoretical framework, are different from the companies’ representatives’ perception of information integration.