The Role of Transportation Infrastructure Development in Reducing Spatial Inequality in the Makran Border Region

A B S T R A C T
The Makran region, as a strategic zone in southeastern Iran, has consistently been highlighted in national and regional development documents due to its geopolitical position, direct access to open waters, and diverse economic potentials. However, weaknesses in transportation infrastructure, dispersed services, and limited connectivity have intensified spatial inequalities and hindered integrated and sustainable development in the region. Accordingly, the present study aims to explain the role of transportation infrastructure development in enhancing spatial justice, reducing regional disparities, and strengthening territorial cohesion in Makran. This research employed a qualitative approach using the grounded theory strategy. Data were collected through semi-structured interviews, and sampling was conducted purposively and then theoretically. The data collection process continued until theoretical saturation reached, and after conducting 20 interviews including 12 experts and 8 local actors no new conceptual insights emerged. The findings indicate that transportation infrastructure development in Makran, beyond its functional role in connectivity, generates wide-ranging economic and social implications such as improved accessibility, reduced transportation costs, facilitation of goods and service flows, and increased the capacity of the region for investment. Moreover, such development can enhance functional linkages between urban and rural settlements, decline spatial fragmentation, and augment local community resilience. Overall, the results demonstrate that targeted and balanced development of transportation infrastructure if supported by appropriate institutional and governance mechanisms can serve as an effective driver in reducing spatial inequalities and reinforcing Makran’s position within national and transnational development networks.
Extended Abstract
Introduction
The Makran border region in southeastern Iran occupies a highly strategic position within the national and regional spatial system. Due to its direct access to open waters, proximity to international trade routes, and significant economic and geopolitical potentials, this region has repeatedly been emphasized in development policies and territorial planning documents. Nevertheless, Makran continues to suffer from persistent spatial inequality, uneven service distribution, weak inter-settlement connectivity, and restricted integration into broader economic and infrastructural networks. One of the principal factors underlying this condition is the inadequacy of transportation infrastructure, which has constrained mobility, raised transaction and logistics costs, weakened functional linkages among settlements, and slowed the process of balanced regional development.
Transportation infrastructure, from a spatial justice perspective, is not simply a technical subsystem of development; rather, it is a fundamental determinant of access, opportunity, territorial cohesion, and the equitable distribution of development benefits. In border regions such as Makran, where distance, remoteness, institutional fragmentation, and uneven state presence intersect, transportation networks play a decisive role in shaping patterns of inclusion and exclusion. Accordingly, understanding how infrastructure development may contribute to reducing spatial inequality is essential for designing more effective regional development strategies. The study seeks to explain the role of transportation infrastructure development in mitigating spatial inequality and promoting territorial integration in the Makran border region.
 
Methodology
This study is applied in terms of purpose and descriptive-analytical in terms of nature, which adopted a qualitative approach. Data were accumulated utilizing documentary and field methods. The documentation section included a review of national and regional development programs, land management documents, reports of the Ports and Maritime Organization, and previous academic studies. The field section was conducted through semi-structured interviews with space planning experts, regional managers, transportation informants and faculty members familiar with the development dynamics of Makran region. Participants were selected initially through purposive sampling and later through theoretical sampling, until theoretical saturation was reached. In total, 20 interviews were conducted, comprising 12 experts and 8 local actors.
The data analysis process followed the systematic procedures of grounded theory, including open coding, axial coding, and selective coding. During open coding, the interview transcripts were broken down into discrete conceptual units. These units were then organized into broader categories during axial coding by identifying relationships among causal conditions, contextual factors, intervening conditions, strategies, and outcomes. Finally, selective coding was used to integrate the categories into a coherent theoretical model explaining the role of transportation infrastructure in reducing spatial inequality. This methodological design allowed the study to move beyond surface-level descriptions and produce an interpretive model rooted in empirical evidence.
 
Results and Discussion
The findings demonstrate that transportation infrastructure development in Makran has multidimensional and far-reaching implications. Initially, it improves physical accessibility across the region and between Makran and larger national and transnational networks. Second, it reduces the cost and time of movement for people, goods, and services, thereby enhancing economic efficiency and expanding the spatial reach of markets. Third, it increases the capacity of the region for public and private investment by declining uncertainty and improving logistical reliability. Fourth, it strengthens functional relations between urban and rural settlements, helping to reduce the socio-spatial divide that has long characterized border areas. Fifth, it contributes to greater resilience among local populations by improving access to health, education, administrative, and commercial services.
At the same time, the findings reveal that spatial inequality in Makran is produced through a combination of structural, institutional, and managerial conditions. Deficient communication infrastructure, inadequate transport connectivity, long geographic distances, poor coordination among institutions, bureaucratic complexity, low managerial capacity, and limited investment resources were identified as major factors reinforcing inequality. These conditions indicate that the problem is not reducible to physical infrastructure deficits alone. Rather, spatial inequality emerges through the interaction of material underdevelopment and governance-related constraints. Therefore, infrastructure development should be understood as part of a broader institutional and territorial transformation process.
The analysis suggests that transportation infrastructure can function as a catalyst for regional integration only when it is embedded in a coherent policy environment. Infrastructure projects that are implemented without institutional coordination, participatory governance, or alignment with local needs may fail to generate meaningful reductions in spatial inequality. In contrast, strategically planned transport investment can reshape settlement hierarchies, improve access to opportunity, and create more balanced relations between the center and the periphery.
From a theoretical standpoint, the study underscores that spatial inequality should be conceptualized not merely as a gap in physical provision, but as a multidimensional outcome of uneven power relations, administrative centralization, historical neglect, and territorial marginalization. Transport infrastructure, in border regions such as Makran, has the potential to reduce this inequality by enabling connectivity, circulation, and accessibility. However, this potential can only be realized if development policies address the institutional and governance barriers that mediate infrastructure outcomes. Thus, the study supports a justice-oriented view of regional development in which infrastructure is treated as an instrument of territorial equity rather than as an isolated engineering intervention.
 
Conclusion
The study concludes that the reduction of spatial inequality in the Makran border region requires an integrated and justice-based approach to transportation infrastructure development. Infrastructure can play a transformative role in improving accessibility, strengthening territorial cohesion, facilitating economic activity, and connecting marginalized settlements to wider development circuits. Yet its effectiveness depends on institutional coordination, administrative efficiency, and development strategies that recognize the social and spatial specificities of the border region.
In practical terms, the findings indicate that Makran’s transition from spatial fragmentation toward balanced development will require more than road construction or logistical expansion. It will require a comprehensive framework that links infrastructure investment to governance reform, regional planning, and spatial justice principles. When such a framework is in place, transportation infrastructure can serve as a powerful mechanism for reducing inequality, enhancing regional resilience, and reinforcing Makran’s role in national and transnational development networks.
 
Funding
There is no funding support.
 
Authors’ Contribution
The first author was responsible for conceptualization, methodology design, data collection and analysis, drafting the manuscript, and final editing. The second and third authors contributed to supervising the research implementation, validating the findings, critically revising the article's content, and approving the final version. The fourth author contributed to developing the theoretical framework and structural editing, as well as formulating the analysis, discussion, and conclusion sections..
 
Conflict of Interest
Authors declared no conflict of interest.
 
Acknowledgments
We are grateful to all the scientific consultants of this paper.