Abstract
Lorestan province has established the connection between the capitals and important cities of Iran during different eras. The need for quick and easy access and permanent communication between these areas has led to the construction of huge bridges despite the rivers full of water and deep valleys. Because these bridges are a natural interwoven complex and have interactions with humans, bridges over time in the geographical area of Middle Zagros of Lorestan connect with great civilizations and in a way realize human rights and religious, ethnic, and economic relations. and cultural as well as the development of welfare, security and comfort are used in difficult mountainous areas, they can well represent the concepts of the cultural landscape. Studying these properties and their cultural landscape can help to identify the components of cultural landscapes and their conservation in addition to conserving the bridges themselves. On the other hand, the first and most important step is to identify the challenges that have not been identified and classified so far. Based on this, the research aims to identify the challenges of conserving the cultural landscapes of Lorestan’s historical bridges through the review and analysis of documents related to this issue. In this research, library and field information was collected on the valuable historical bridges of the Kashkan River, and then the concepts of challenges and their subsets through analysis using the qualitative research method. Data analysis was done through coding operations at 3 levels and finally, the challenges and sub-challenges related to it were categorized into 6 general categories according to the characteristics and indicators of the study samples.
Keywords: Conservation Challenges, Historical Bridges of Lorestan, Cultural landscape, Kashkan River, Coding.

Introduction
Bridges have existed in the mountainous land of Iran as buildings with Iranian architecture since prehistoric times. These properties made the distances shorter and faster because they made it possible to pass easily and safely through the natural complications of rivers and valleys. The need for quick and easy access and permanent communication between these areas has led to the construction of huge bridges (Minorsky, 1937). So far, a significant number of bridges have been reported in the mountainous land of Zagros, which surrounds Khuzestan (Siroux, 1949). Most of these bridges are located in Lorestan. Lorestan is located between the two ancient capitals of Susa and Hamedan. Therefore, the existence of roads, highways and bridges has been necessary as a means of communication. The traces of 100 historical bridges have been observed in more than 25 ancient sites on the map of Lorestan, some of which were built in the Sassanid period in parallel with the expansion of cities and have made great progress in terms of engineering methods and understanding of hydrodynamics it has been observed. Lack of awareness and knowledge of the high value of these properties and related elements (cultural landscape) have caused them to be exposed to much damage. On the other hand, the custodians of conservation have never been able to achieve the necessary successes in the field of conservation of Lorestan historical bridges due to a lack of knowledge of the challenges of conserving these properties and the context in which they are located and the one-dimensional view of conservation on this issue.
The challenges faced in conserving cultural landscapes show the inefficiency of the current system of conserving cultural landscapes, which, if not identified and categorized and solutions are not considered, can lead to the following crises at different times:
• The emergence of a one-dimensional perspective (mere physical protection) and one-dimensional approaches such as a product-oriented approach to the issue of cultural conservation of historical bridges of Lorestan;
• Ignoring the important and key issues in planning the cultural landscape of Lorestan historical bridges;
• Inability to educate and attract the participation of the public to preserve these valuable properties;
• Failure to provide appropriate solutions and not identify internal and external threats in the field of policy and legislation to conserve the aforementioned properties;
• Making the problem of increasing the level of expertise of experts concerning the mentioned cultural landscapes.
Therefore, this research has tried to introduce and categorize the challenges as far as possible to understand. Considering the qualitative and objective of the research, to achieve the research objectives, the following questions are raised:
• What are the challenges of cultural conservation of Lorestan historical bridges? 
• How can we achieve a classified, classified structure of the challenges of conserving cultural landscapes of Lorestan historical bridges?

Identified Traces 
Since each qualitative research is unique and inimitable, the analytical approach used in this research is also unique, but as mentioned, coding was done in 3 Stages through searching in documents, and related charters and used in the form of first-round, second-round (middle) and third round (post-coding). The term “cultural landscape” itself has been a double essence in its nature since the early years of its creation in the field of scientific societies. The challenges posed in conserving cultural landscapes themselves demonstrate the inefficiency of the current system of cultural landscape conservation. Eventually, 137 codes to 68 codes and finally 18 common codes in the field of cultural landscape conservation challenges were achieved. This research has been conducted by continuing to analyze and adapt the common outcomes with the study samples, reaching 10 common categories and 6 main concepts that form the main framework and conclusion framework of the research.
“These concepts are the beginning of writing theories, reading the challenges of conserving the cultural landscape of Lorestan historical bridges, and the last stage of the journey from reality to abstraction.”
Therefore, as mentioned, the challenges that have been achieved from the researcher’s study in the literature of the research subject to conserve cultural landscapes have been used and adapted with the field studies of the researcher to achieve the challenges of cultural landscape conservation of historical bridges, were finally categorized into the following 6 categories:  
• Policy making and legislation;
• Conservation approaches;
• The level of expertise of cultural landscape experts in the areas of identification, evaluation, monitoring and management of cultural landscapes;
• Educating the community to conserve cultural landscapes
• Threats arising from internal and external factors of cultural landscapes; and
• The paradigm shift of Conserving Cultural Landscapes.

Conclusion
This research tried to identify the meanings and concepts of challenge, as qualitative and applied research, and to classify the challenges of cultural conservation of historical bridges of Kashkan River in Lorestan by analyzing the literature and theoretical foundations. Finally, these challenges were divided into 6 groups through coding in three stages and the path from reality to abstraction, with related sub-challenges of each category. The number of codes and percentage of each of the challenges were presented in the relevant tables to be able to familiarize readers with them, study the most important of these challenges and their impact on the studied properties in different dimensions if needed and be aware of them. 
In response to the first question of the research, all the challenges of conserving the cultural landscapes of the mentioned historical bridges were obtained through library and field studies and then by analyzing the literature and theoretical foundations of the subject in 6 general categories along with the sub-challenges. Challenges that each one needs to understand, plan and use different experts to meet them at different time intervals.
In response to the second question, the research attempted to achieve a structured, classified, and categorized framework by collecting, and analyzing the literature and theoretical foundations of the research, exploring the concepts and challenges of conserving cultural landscapes through the process of conservation in charters, conventions and treaties related to the subject, and localizing the mentioned challenges to be adaptable and using them as a conservation factor.
These achievements are certainly not complete and only part of the researcher’s achievements in this field are due to interest and dependence on valuable and unrepeatable properties of the historical bridges of Lorestan. properties that have embraced the identity and cultural values of a people from a long time ago and require the participation of all people, especially local communities whose main beneficiaries. In all stages from identifying challenges to conserving cultural landscapes of Lorestan historical bridges, the unmatched role of indigenous people and local communities should be considered the most important factor in conserving historical bridges, because they are the main owners of these monuments and the most important unclaimed conservationists.

Abstract
Iranian architects often designed structures to serve multiple functions beyond their primary purpose, a practice heavily influenced by Iran’s hot, arid climate and long summers. This multi-functionality is most evident in water-associated architecture, particularly in Isfahan’s historical bridges. Despite extensive research on Isfahan’s architecture, this specific aspect of its bridges has been understudied. This research aims to re-examine the non-transportation functions of four Isfahan bridges: Pol-e Shahrestan/Ji, Pol-e Allah-Verdi Khan/Si-o-se-pol, Pol-e Khaju/Shahi, and Pol-e Jubi/Sa’adat-Abad, highlighting their role in ceremonial and environmental landscape architecture. Main Research Question and Hypothesis: The study investigates how and why ceremonial functions were integrated into these bridges. It hypothesizes that this practice was inspired by Indian Jal Mahals (water palaces), introduced to Iran via extensive political and cultural exchanges during the Safavid era. Research Method: This study employs a historical-descriptive approach, with data gathered through documentary research and analysis of historical sources and travelogues. The findings indicate that while the concept of ceremonial water pavilions (Cheshmeh Emarat in Iran, Jal Mahal in India) pre-existed, its application on bridges was an innovation in Safavid Iran. The bridges served as ceremonial platforms for royal events like the Abrizan (Water Sprinkling Festival), receptions for ambassadors, and public spectacles. Furthermore, they played a crucial role in microclimate moderation by creating reservoirs that increased humidity and helped recharge underground aquifers, addressing critical environmental needs of the capital city.
Keywords: Historical Bridges, Cheshmeh Emarat, Safavid Isfahan, Jal Mahal, Ceremonial Architecture, Landscape Architecture.

Introduction 
This paper explores the multi-functional design of Safavid-era bridges in Isfahan, which extended beyond mere river crossings to incorporate significant ceremonial and environmental roles. This architectural ingenuity was a direct response to Iran’s challenging arid climate and the socio-political ambitions of the Safavid court. The study focuses on how the bridges Pol-e Shahrestan, Allah-Verdi Khan, Khaju, and Jubi were integrated into the urban and royal landscape. While the paradigm of the water pavilion (Cheshmeh Emarat) was known in Persian and Indian (Jal Mahal) architecture, its adaptation onto bridge structures represents a unique Safavid development. This research addresses a gap in the existing literature by systematically analyzing these bridges not just as feats of engineering, but as central elements of ceremonial life and environmental engineering in the capital.

Materials and Methods 
This research is based on a historical-interpretive methodology. Data was collected through meticulous documentary research, including analysis of primary sources like European travelogues (e.g., by Chardin, Tavernier) and Safavid chronicles. Secondary sources encompass modern scholarly works on Safavid architecture and urbanism. Architectural analysis was conducted by examining historical plans, photographs, and existing structures to understand the form and function of the pavilions. The comparative method is used to draw parallels between the Iranian Cheshmeh Emarat and the Indian Jal Mahal tradition, tracing potential routes of cultural and architectural influence during the 17th century.

Data and Findings 
The investigation reveals distinct evolutionary stages:
• Pol-e Shahrestan: An older bridge onto which an octagonal pavilion (Hasht Behesht plan) was added during the Safavid period, representing an architectural annexation rather than an original design.
• Pol-e Allah-Verdi Khan (Si-o-se-pol): Built by Shah Abbas I, its primary function was connectivity. Ceremonial activities were initially held in the vaulted spaces beneath the bridge deck due to structural constraints, serving as a royal loge for the Abrizan festival and receiving dignitaries.
• Pol-e Khaju: Constructed by Shah Abbas II, it represents the pinnacle of this integration. Two central pavilions (Beyglarbeygi), adapting the Hasht Behesht plan to the bridge’s axis, were purpose-built as ceremonial platforms. The bridge could be dammed to create a vast lake for boating, fireworks, and reflections of upstream palaces like Ayeneh-Khaneh.
• Pol-e Jubi: This bridge provided private access to royal gardens. It featured a central pavilion (now destroyed, but documented in European engravings) similar to the one on Pol-e Shahrestan, offering the royal family a secluded vantage point.

Discussion 
The findings confirm the hypothesis that the sophisticated development of bridge-pavilions in Safavid Isfahan was influenced by cultural and political exchanges with the Indian subcontinent, where the Jal Mahal tradition was well-established. The Safavids adeptly synthesized this influence with pre-existing Iranian concepts like the Cheshmeh Emarat and the ancient Abrizan festival. This discussion argues that these structures were not merely aesthetic additions but vital components of urban infrastructure. They served as instruments of royal propaganda, stages for displaying sovereign power to both the public and foreign emissaries. Furthermore, the creation of artificial lakes through damming was a brilliant hydrological strategy. It addressed Isfahan’s environmental needs by significantly moderating the microclimate through evaporative cooling and critically recharging the subterranean aquifers that supplied the city’s water via qanats.

Conclusion
In conclusion, the historical bridges of Safavid Isfahan exemplify a profound integration of multifunctional design. Iranian architects, responding to climatic necessities and royal ambition, masterfully extended the function of these structures from mere utilities to complex ceremonial platforms and environmental regulators. The practice of adding pavilions to older bridges or incorporating them into new designs was a strategic innovation in the landscape architecture of the era. While inspired by the Indian Jal Mahal, the Safavid implementation on bridges was an original contribution. These structures became iconic urban elements, central to the city’s public ceremonies and essential to its ecological balance. They stand as testament to a holistic architectural vision where utility, ceremony, and environmental technology were seamlessly woven together, defining the grandeur of Isfahan as a Safavid capital.