The Construction of Concrete Bridges across Yuze Ravine

-Hachimantai Bridge and Keikoku Bridge in Tohoku Express Way-

Abstract

Hachimantai Bridge and Keikoku Bridge are typical of the concrete bridge thrown across Yuze Ravin. These bridges have been constructed where the Tohoku Express Way crosses Yuze Ravin. Each bridge was planned to fit the geografical condition and hard winter weather, considering the harmony of it's appearance and the steep ravin's prospect. In this paper, we review the construction process of Hachimantai bridge and Keikoku bridge.