Technical improvement in design and construction methods for arch-shaped bridge and its background through survey of two stone bridges, Sapporo Soseibashi and Nihonbashi

Abstract

Soseibashi, an arch-shaped bridge in Sapporo, was dismantled for reconstruction of infrastructure in city center of Sapporo. Through the literature and in-situ survey of Soseibashi, it was found that the bridge had a unique structural system same as that of Nihonbashi, well known bridge as a national treasure in Tokyo. This paper introduces the characteristics of those bridges and the technical improvement in design and construction methods for arch-shaped bridge as well as their historical background.