Sou River Bridge

Sou River Bridge is the world first corrugated steel web pretensioned T-shaped girder bridge located in Sou Town, Minami-Kaga City, Ishikawa Prefecture.
Corrugated steel web replaces concrete web of conventional pretensioned concrete T-shaped girder. It increases flange width without increasing weight of a girder compared to conventional girder, that reduces the number of girders used in a bridge and overall weight of superstructure. About 6% cost reduction was accomplished compared to conventional pretensioned concrete T-shaped girder bridge in the project. It also reduced weight of superstructure as much as about 20%.