Extradosed Prestressed Concrete Bridge with High-Strength Concrete, Japan—Yumekake Bridge

The Yumekake Bridge, located near the UNESCO World Heritage Site of Sacred Sites and Pilgrimage Routes in the Kii Mountain Range, Japan, represents a groundbreaking achievement in bridge engineering. It is the nation's first extradosed prestressed concrete bridge utilizing high-strength (60 MPa) and self-compacting cast-in-place concrete for both the tower and box girder, along with high-strength materials for the piers. This innovative design enhances slenderness and seismic resistance, addressing structural challenges in steep ravines like the Kumano River. The bridge's special features are detailed in this study, showcasing advancements in material science and civil engineering that could inform future infrastructure projects in similar environments.

Akiyama, H., Nakayama, M., & Kayanoki, H. (2011). Extradosed Prestressed Concrete Bridge with High-Strength Concrete, Japan—Yumekake Bridge. Structural Engineering International, 21(3), 366–371. https://doi.org/10.2749/101686611x13049248220276