Pedestrianizing a street has been recognized as a useful planning method to vitalize the activities in a downtown. This paper focuses on the management system for Heiwa Mall located in the downtown of Asahikawa City, which was pedestrianized in 1972 as the first pedestrianized public street in Japan. It clarifies the process of forming the existing management system since then and points out the characteristics and problems of the long term management. It concludes by suggesting the key factors considered for the management system for a pedestrianized street.