History
Tanaka Award by Japan Society of Civil Engineers
Outstanding Civil Engineering Achievement Award by Japan Society of Civil Engineers
Civil Engineering Design Prize by Japan Society of Civil Engineers
Excellent Work Award by Ministry of Land Infrastructure, Transport and Tourism
Award by Japan Prestressed Concrete Institute
Concrete Institute Awards by Japan Concrete Institute
Award by Japan Construction Machinery And Construction Association
| Oriental Construction Co., Ltd. | Shiraishi Corporation | ||
| 1930s | |||
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| 1933 | Shiraishi Kiso Industrial Joint-stock Company founded by a civil engineer Tashira Shiraishi and other seven companies |
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| 1933 | First pneumatic caisson for the foundation of Shibuya Toyoko Building | ||
| 1938 | Company name changes to Shiraishi Kiso Industrial Company. | ||
| 1950s | |||
| 1952 | Oriental Concrete Corporation founded. | 1951 | No.7 and No.8 Kobe Embankments |
| Started production of prestressed concrete sleepers. | |||
| 1953 | First prestressed concrete shed | ||
| First prestressed concrete railway bridge "Kogen Bridge" | |||
| 1956 | First prestressed concrete building "Minami-Awa City Government Office Building" | ||
| 1958 | First prestresssed concrete tank "Koyasu Reservoir" | ||
| 1960s | |||
| 1961 | First prestresssed concrete monorail girders for The Nara Dream Land | 1967 | Doshima River Immersed Tunnel for Osaka subway |
| 1970s | |||
| 1973 | First prestressed concrete truss bridge "Iwahana Bridge"
1973
1973
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1971 | Hamaoka Nuclear Power Plant foundations by pneumatic caissons |
| 1980s | |||
| 1983 | First egg shaped digester "Second Yokohama Northern Sewage Treatment Plant"
1983
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1981 | First remote control excavation from the ground for pneumatic caissons "Meiko Nishi Bridge" |
| 1984 | First bridge by Bi-prestressing method "Kawabata Bridge" | 1983 | Company name changes to Shiraishi Co., Ltd. |
| 1985 | Pedestrian bridge for Takahashi Community Center
1985
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1984 | Meiko Nishi Bridge awarded prize
1984
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| 1988 | ONR Method | ||
| First concrete arch bridge by lowering method "Uchinokura Bridge" | |||
| 1990s | |||
| 1990 | Company name changed to Oriental Construction Co., Ltd. | 1990 | World's largest pneumatic caisson bridge foundations "Rainbow Bridge" |
| Remote control pneumatic caisson method awarded prize
1990
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| 1992 | NAPP Method | ||
| 1993 | World's first pneumatic caissons with helium mixed gas respiration system (Meiko Triton Bridge) | ||
| "Rainbow Bridge" awarded prize
1993
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| 1994 | Remote control pneumatic caisson method awarded prize
1994
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| Odawara Bridge on Syonan Bypass Road awarded prize
1994
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| 1997 | Youngjong Grand Bridge Pneumatic Caissons | ||
| 1998 | "Hakucho Bridge" awarded prize
1998
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| 1999 | Self-anchored suspended deck bridge "Tobu Recreation Resort Bridge"
1999
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1999 | "Kui Taishin-SSP Method" with Syo-Bond company |
| "Raiden-Todoroki Bridge"
1999
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"Ikeda-Hesokko Bridge" awarded prize
1999
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| Precast concrete brace for earthquake-resistant building method
1999
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| 2000s | |||
| 2002 | "Kiso River Bridge" awarded prize
2002
2002
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2000 | "PC Well-Rifre Method" |
| "Morino-Wakuwaku Bridge awarded prizes
2000
2000
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| 2003 | "Siba River Bridge" awarded prizes
2003
2003
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| 2004 | Taiwan High Speed Railway slabs | 2004 | Omiya Expressway East-West Pneumatic Caisson Tunnel |
| "Yahagi River Bridge" awarded prizes
2004
2004
2004
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| 2005 | "Nozomi Bridge" awarded prizes
2005
2005
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| "Shizumi Bridge" awarded prizes
2005
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| 2006 | "Oidaira Bridge" awarded prizes
2006
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2007 | "STEP Method" |
Oriental Shiraishi Corporation
| 2007s | |
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| 2007 | Oriental Construction Co., Ltd. and Shiraishi Co., Ltd. consolidated to Oriental Shiraishi Corporation |
| 2008 | Filed for reorganization proceeding. Became a wholly owned subsidiary of Japan Bridge Corporation. |
| 2010s | |
| 2010 | Head Office moved to the present registered office. |
| 2011 | "Substructure of Same River Bridge on Japan National Route 6" award prizes
2011
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| Completed corporate reorganization proceedings. | |
| Managements integrated with Japan Bridge Corporation | |
| 2013 | "Repair of Senba River Branch Bridge and Others" awarded prizes
2013
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| "Shin-Sato River Bridge on Kumano-Owase Route" award prizes
2013
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| "Basen River Bridge" awarded prizes
2013
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| "No.4 Repair of Piers of Ichi River Bridge" awarded prizes
2013
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| SCBR Method | |
| 2014 | OSJB Holdings Corporation newly formed and wholly owns Oriental Shiraishi Corporation |
| "Management Work of Sanriku Shore Road Project" awarded prizes
2014
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| 2015 | Launched Solar Power Generation Business |
| 2018 | Awarded the "JPCI Award for Outstanding Structures" by the Ministry of Land, Infrastructure, Transport and Tourism, Kinki Regional Development Bureau, for the "Heijokyu Izanai-kan"
2018
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| 2021 | Acquisition of OSJB Holdings Corporation and technical listing in the first section of the Tokyo Stock Exchange |
| 2022 | 2022 Our stock is listing in the Prime market following a change in market classification of Tokyo Stock Exchange |
