Transition Processes and Current situations of Circular Intersection Space in Okayama City

Abstract

This study analyzes the development processes and spatial transformations of seven circular intersections in central Okayama City. Conceived as symbolic elements of postwar reconstruction planning, these intersections initially reflected urban design intentions in road layouts and surrounding buildings. Over time, social and economic changes have significantly altered their spatial structures and landscapes. The analysis shows that intersections near the station emphasized traffic management and landscape design, while suburban ones prioritized traffic functions, indicating locational differences. Building uses were grouped into three types—station-area, intermediate, and suburban—revealing diversification of roles with changing urban functions. By comparing multiple sites, this study clarifies Okayama’s postwar urban development and offers a basis for future urban historical and spatial studies.