The world's first extradosed bridge with corrugated steel webs: Japan's Ohmi–Odori Bridge

This paper describes the design and construction of Ohmi–Odori Bridge in Japan, which is the world's first multi-cell extradosed prestressed composite bridge with corrugated steel webs. Structurally, the bridge combines two new technologies: a composite prestressed concrete bridge with a corrugated steel web to reduce the dead weight of the main girder and an extradosed bridge to allow a longer span length. Several innovations were used on this bridge, including a three-cell box cross-section, adopted for the first time for the main girders of a bridge using corrugated steel webs, and a steel–concrete composite structure adopted for the cable anchorages. In 2006, the bridge was honoured with the highest award for a bridge project, the Tanaka Prize awarded by the Japan Society of Civil Engineers.