The Ōta River Bridge (, also rendered in

rōmaji The romanization of Japanese is the use of Latin script to write the Japanese language. This method of writing is sometimes referred to in Japanese as . Japanese is normally written in a combination of logogram, logographic characters borrowe ...

as Otagawaohashi, also called Otagawa Bridge or Otagawa Ohashi Bridge) is a bridge on the

Ōta River is a river in Hiroshima Prefecture, Japan. Geography Its main stream originates in (1,339 m) and empties, through a flood-control channel, into the Seto Inland Sea. The river is one of the major rivers in the prefecture and descends ...

Hiroshima is the capital of Hiroshima Prefecture in Japan. , the city had an estimated population of 1,199,391. The gross domestic product (GDP) in Greater Hiroshima, Hiroshima Urban Employment Area, was US$61.3 billion as of 2010. Kazumi Matsui has b ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. It is the southernmost of all the crossings of the Ōta River and carries Route 3 (the Hiroshima Minami Route) of the Hiroshima Expressway.

Construction

A decision to build a bridge as part of the expressway system was made in 2004. A

design competition A design competition or design contest is a competition in which an entity solicits design proposals from the public for a specified purpose. Architecture An architectural design competition solicits architects to submit design proposals for a b ...

committee was formed in late 2008 and received entries from 18 Japanese and three international firms. The winning design by Kenichi Nishiyama of collaborating with Yoko Kabaki, Akiyoshi Nii, and Hitoshi Okamura, was selected in July, 2009. The bridge was built by

Shimizu Corporation is an architecture, architectural, civil engineering and General contractor, general contracting firm. It has annual sales of approximately US$15 billion and has been widely recognized as one of the top 5 contractors in Japan and among the top 2 ...

and finished in 2014. The bridge design had to comply with

height restriction laws Height restriction laws are laws that restrict the maximum height of structures. There are a variety of reasons for these measures. Some restrictions serve aesthetic values, such as blending in with other housing and not obscuring important landmar ...

due to its proximity to

Hiroshima–Nishi Airport was an airport in Nishi Ward, located southwest of Hiroshima City, Japan. The airport closed in November 2012, with the northern portion of the site continuing operation as Hiroshima Heliport (広島ヘリポート). History Hiroshima's fir ...

. The bridge, a composite

prestressed concrete Prestressed concrete is a form of concrete used in construction. It is substantially prestressed (Compression (physics), compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. Post-t ...

continuous rigid frame

box girder A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an i-beam, - or H-beam. Originally constructed of wrought iron joined by riveting, they are now made of rolled steel, rolled ...

with steel

arch bridge An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its structural load, loads partially into a horizontal thrust restrained by the abutments at either si ...

stiffener, won the

Japan Society of Civil Engineers is a professional scientific nonprofit organization of the civil engineering field of Japan. It was established as an incorporated association in 1914 and its offices are located in Yotsuya, Shinjuku, Tokyo Tokyo, officially the Tokyo M ...

Tanaka Award.

Notes

References

External links

* April, 2014 {{DEFAULTSORT:Ota River Bridge Arch bridges in Japan Bridges completed in 2014 Shimizu Corporation Ōta River Bridges in Hiroshima Prefecture Buildings and structures in Hiroshima Transport in Hiroshima