الفهرس 
Framework for optimizing sustainable infrastructure bridge projects
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Abstract
Proper development and operation of infrastructure projects, such as bridges and highways, can contribute significantly to the mission of sustainable development. This thesis introduces a key-list of gathered important criteria that affect the sustainability of bridge projects. The initial list of criteria has been identified by unstructured interviews. Then, structured interviews and questionnaire survey have been conducted to identify the final list that is deemed important in rating green bridges. Final criteria results from this thesis are used to develop a green bridge rating system to achieve sustainable development. Degree of importance and weights of these criteria are determined using Simo{u2019}s procedure. Five classes of bridges are proposed to judge their status with respect to sustainability. This research proposes a conceptual instrument that measures the user- based assessment of material sustainability and validates decision-maker{u2019}s perceptions in order to evaluate the contribution of characteristics in materials selection. The contribution of this research is the development of a framework that consists of two modules for selecting appropriate building materials in order to help decision-makers with the appropriate selection of conventional or green bridges materials