History

1705

Business Started in Ozaki village, Senshu (present-day Osaka).

1887

Founded in Osaka by Zenzo Zenitaka, the founder.

1907

Opened Tokyo Office.

1912

Formed as a limited partnership.

1924

Opened Nagoya Branch.

1929

Contracted and completed construction of Azuma Bridge (Tokyo) using Pneumatic Caisson Method first in its application in Japan.

1931

Incorporated, adopting its present name "The Zenitaka Corporation".

1944

Opened Fukuoka Branch (present-day Kyushu Branch).

1945

Opened Sendai Branch (present-day Tohoku Branch).

Opened Hiroshima Branch.

1947

Opened Sapporo Branch (present-day Hokkaido Branch).

1961

Listed on the Second Market of Osaka Securities Exchange.

1963

Put Shield Work Method to practical use.

1966

Listed on the first Market of Osaka Securities Exchange.

Put Cantilever Bridge Construction Method (DYWIDAG System) to practical use.

1974

Established "The Zenitaka Corporation (U.S.A.)" in U.S.A.
Established "Zenitaka Corporation Comercio E Representacoes Ltda" in Brasil.

1979

Put New Austrian Tunneling Method (NATM) to practical use.

1980

Teruyuki Zenitaka assumed the position of Chairman and Kazuyoshi Zenitaka became President.

1984

Established an affiliate company "Correa Zenitaka Inc." in the Philippines.

1993

Established Jakarta Representative Office in Indonesia.

1995

Put Shield Earth retaining Wall (SEW) System to practical use.

1997

Established Philippine Representative Office.

Obtained ISO9001 Certificate.

Put Soft Coring Investigation Method to practical use.

1998

Put Concrete Filled Tube (CFT) Column System to practical use.

1999

Established Africa Representative Office(Kenya).

2001

Established Manila Branch in Philippines

Obtained ISO14001 Certificate.

2002

Established Hanoi Representative Office in Vietnam.

Awarded 4th Infrastructure Technology Development Award by "Soft Coring".

2003

Awarded 5th Infrastructure Technology Development Award by "Shield Earth retaining Wall (SEW) System".

2004

Obtained Construction Occupational Health and Safety Management System (COHSMS) Certificate.

Obtained the Certification of Construction Technology for "Soft Coring C+" by Public Works Research Center.

2005

Celebrated 300th anniversary of the establishment of business.

2006

Obtained the Certification of Construction Technology for "FAST (Free Access Shield Tunnel) Method" by Japan Institute of Construction Engineering.

2007

Celebrated 120th anniversary of its founding of the company.

Put "Temporary Cofferdam supported by Truss Structure (TRID)" to practical use.

2009

Developed "Fc150N/mm2 Class High-Strength Concrete" and obtained the authorization by Minister of Land,Infrastructure and Transportation./p>

2012

Established Ho Chi Minh City Representative Office.

2013

Put「Direct start and Arrival Method using FRP SHHET Pile」to practical use.

2014

Established Myanmar branch.

2015

Celebrated 310th anniversary of the establishment of business.

2016

Hisayoshi Zenitaka assumed the position of President.

Put Tunneling Energy Management System "TUNNEL EYE" to practical use.

2017

Yoshio Kazuyoshi Zenitaka, chairman of the board, awarded "The Order of the Rising Sun, Gold and Silver Star" by The Emperor Heisei for long term contribution to Construction Industry.

2018

Developed the system for prompt evaluation of Net Zero Energy Building "ZEB" jointly.

2020

Renewed Corporate Uniform.

2021

Obtained ”ZEB Planner" Certificate.

2024

Certified ”Excellent Corporations of Health Management 2024".

Received "Kyoto SDGs Partner" certification for the Osaka Branch.

2025

Received "Kawasaki SDGs Gold Partner" certification for the Yokohama Branch.