Himiyume Bridge
Himiyume Bridge
日見夢大橋
Tanakamachi, Nagasaki, Japan
(213) feet high / (65) meters high
591 foot span / 180 meter span
2004
Himiyume Bridge is one of Japan's more stylish extradosed expressway bridges with a hybrid box beam composed of corrugated steel walls for the vertical sides and more conventional concrete for the top and bottom.
The hybrid style is popular in Japan due to the reduction in weight which leads to reduced seismic forces and smaller substructures lowering cost and allowing longer spans. Corrugated steel webs without additional stiffeners also have higher shear-buckling strength than that of flat plate steel webs. Corrugated steel webs are more easily fabricated and constructed than concrete webs. Less onsite concrete work saves time and money. Prestressing can be efficiently introduced into the top and bottom concrete slabs due to the so-called “accordion effect” of corrugated webs and the external post-tensioned tendons used with corrugated steel webs have many advantages over the internal bonded tendons.
Himiyume Bridge satellite image.
Himiyume Bridge location map.
