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 logographic characters borrowed from Ch ...

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

Ōta River is a 103 kilometer (64 mile) long river in Hiroshima Prefecture, Japan. Its main stream originates in (1,339m) and empties through a flood control channel into the Seto Inland Sea. The river is one of the major rivers in the prefecture and desce ...

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 h ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. 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 architectural, civil engineering and 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 20 in the world. It is a family bu ...

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 limit the height of new buildings so as not to block views of an older work decreed to be an impo ...

due to its proximity to

Hiroshima–Nishi Airport was an airport in Nishi-ku, Hiroshima, Nishi Ward, located southwest of Hiroshima, Hiroshima City, Japan. History Hiroshima's first airport, , opened on a nearby island in Naka-ku, Hiroshima in 1940. It was largely destroyed during the atomic ...

. The bridge, a composite

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

continuous rigid frame box girder 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 loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct ...

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 (; ja, 東京, , ), of ...

Tanaka Award.

Notes

References

External links

* April, 2014 {{DEFAULTSORT:Ota River Bridge Bridges in Japan Bridges completed in 2014 Shimizu Corporation Ōta River