Abstract
Ikuchi Bridge is a complex cable-stayed bridge with a central span length of 490 m which is located the Onomichi-Imabari route (Nishi Seto Expressway) in the Honshu-Shikoku Bridge Project. The main girder is a steel-concrete mixed structure as the first case adopted in Japan which consists of a steel girder for center span and prestressed concrete (PC) girder for both side spans. This report summarizes the outline of the design and construction of the bridge, completed in December 1991. Special remarks to the fundamental design concepts and the constructive features on connection part between steel girder and PC girder, and also stress and geometrical control in the tolerance against plastic deformations due to the influence of creep and shrinkage occurring on PC side span girders are reported.
