| Abstract | The research focuses on the practical aspects of life cycle management for local infrastructure projects in Thailand. This study is represented as holistic perspectives by considering socio-economic, environmental, and culture issues. It highlights potential improvements for future infrastructure projects. The main objectives are: (1) to identify sustainability factors of community infrastructure projects; (2) to explore keys measurements for sustainability of community infrastructure projects; (3) to analyze the influence of sustainability factors on sustainability of community infrastructure projects; (4) to propose an improved life cycle management of community infrastructure projects. The design of this research uses combines both of the qualitative and the quantitative approaches, the former for collecting the data while the later for determining their effects. The study models for community infrastructure projects consist of two main variables: 1) sustainability factors, 2) keys measurements of sustainability infrastructure project. In the beginning stage, the qualitative method was used to explore the related sustainability factors concerned the management of local infrastructure projects. This method helps the researcher to obtain in-depth information and rationale. Thereafter, the quantitative method was used to determine the affect of sustainability factors on community infrastructure projects. Questionnaires, which were adjusted based on the recommendation of organization’s manager, were sent to all related respondents to identify factors in practices. The data was collected from 7 organizations in different locations, a total of 720 respondents who have worked as project representative persons. Then, 243 sets of questionnaire (35%) were analyzed due to completed data without significant missing. Statistical methods of raking, factor analysis and multiple regressions are implemented. While the factor analysis was applied to diminish items for identifying high impact factors, the multiple regression to explain the relation among sustainability factors and keys measurements of sustainability for community infrastructure projects. The results from ranking analysis showed that the most important three factors are: “environment conservation concern”, “research and development for practical application”, and “integration of perspectives of socio-economic, environment, and culture”. Results of factor analysis showed that there were six dimensions significantly influenced on sustainability infrastructure projects: (1) policy and plan, (2) environment and natural resource, (3) facility and infrastructure, (4) finance and budget, (5) information and knowledge, and (6) management and administration. The regression model showed that sustainability factors collectively accounted for 71.6 % of variation in sustainability infrastructure projects (R2 = 0.716, F = 102.531, and p 0.05). Four most important dimensions were: 1) management and administration, 2) information and knowledge, 3) policy and plan, and 4) finance and budget, respectively. Among all, the management and administration item has the largest effect on sustainability infrastructure projects. The study is conducted a perspective of significant sustainability factors for sustainability of infrastructure projects in Thai community. In summary, the infrastructure development requires these factors as mentioned above to be considered throughout the management process in order to accomplish the sustainability infrastructure projects. Project developers, managers and practitioners need to include sustainability factors all through life cycle for gaining sustainability projects in local level. Moreover, it also highlights the significant of decision, the guidelines of decision making, for sustainable deliverable of local infrastructure projects. |