Iran's architecture was not disconnected from the traditions of its predecessors in any era. In the evolutionary process of architecture, the past designs were usually developed, and, the innovations were added according to the requirements of the time; the Safavid era was like that. Iran's roads were linked with worldwide commercial cultural traditions at this time, and the construction of the bridge as a constituent of the road was considered seriously when faced with natural obstacles, especially rivers. Hence, in safavid dynasty, most of Irans bridges were built to create, maintain and expand communication routes. New bridges were built with the transfer of the capital to Isfahan and Zayandeh Rood stationing in the middle of the city.
Historical bridges of Iran, as well as other artifacts of traditional societies, in addition to their function, are the place for the crystallization and transfer of implicit concepts in the world-view of its creators. Khaju Bridge has also had the role of dam and strain from the most beautiful bridges of the Safavid era. For this reason, along with the Isfahan bridges, Khaju Bridge has a different body than other bridges. Here's the question: How was the construction of the Khaju Bridge at different times? The present paper attempts to reconstruct the Khaju Bridge in its original structure based on descriptive and visual documents, in different periods of time, and provide a general understanding of the Khaju Bridge from the beginning of its existence to the present time. It is identifiable. This research analyzes the images and documents to find out the components of construction. This research has been carried out using a comparative study method based on library and field studies. For the first time, this research reveals the original image of the Khaju Bridge and its form and shape over time.