Chizaki DORO Co., Ltd.

Chizaki DORO Co., Ltd. (地崎道路株式会社) is a Japanese civil engineering and road-paving contractor headquartered in Minato, Tokyo. It was established in April 1968 by separating the paving division of Chizaki-gumi (now Iwata Chizaki Construction Co., Ltd.), starting with capital of 50 million yen and offices in Tokyo (Nishi-Shinbashi) and Sapporo. The company is registered under Japan's Construction Business Act and has grown into a specialist contractor active in roads, airports, land development and parks, with a stated mission of building infrastructure that connects people, cities and regions. The company's core business is road paving and maintenance, but it also undertakes airport works, land readjustment, park construction and environmental projects. Its technical portfolio includes BIO-REMEDIATION, a bioremediation technology that uses microorganisms to break down oil contamination, and it operates an oil-contaminated soil treatment center in Tomakomai, Hokkaido — described as the first such intermediate treatment facility run by an industrial-waste licensed operator in Japan. Chizaki DORO also produces ready-mixed concrete at its Chitose plant and, through a joint venture with Keihin Recycling Center, manufactures and sells asphalt mixtures. Organizationally, the company operates a Hokkaido branch, a Honshu supervisory division, and branches in Tohoku, Nagoya and West Japan, reflecting a nationwide footprint anchored in Hokkaido. In 2004 it came under the umbrella of IC Holdings Co., Ltd., a joint holding company formed by Iwata Construction and Chizaki Industry. The company marked its 50th anniversary in 2018 and has since adopted the management philosophy "Link the Road," emphasizing pride in connecting roads and innovation as its mission. Its current mid-term plan, covering the period from fiscal 2024, focuses on human-capital management to strengthen its management base and pass on technical expertise. Chizaki DORO is led by President Satoshi Yokohira. It holds ISO 9001, ISO 27001, ISO 14001 and OHSAS 18001 certifications, and has received numerous awards from NEXCO East Japan and regional authorities for construction quality. The company remains a privately held subsidiary within the IC Holdings group and continues to position itself as a contributor to sustainable social infrastructure.

Chizaki DORO Co., Ltd. was established in April 1968 by separating the paving division of Chizaki-gumi (now Iwata Chizaki Construction Co., Ltd.), with capital of 50 million yen. It set up its head office in Nishi-Shinbashi, Minato, Tokyo, and a Sapporo branch in Chuo-ku, Sapporo (now the Hokkaido Branch). In October 1968 it received Construction Minister registration (Wa) No. 5282 under the Construction Business Act. The company increased its capital to 100 million yen in January 1972 and to 200 million yen in December 1973. In January 1974 it opened sales offices in Sendai (now Tohoku Branch), Nagoya (now Nagoya Branch) and Osaka (now West Japan Branch), and moved its head office to Atago, Minato, Tokyo, in April 1974. A Tokyo Branch was opened in Atago in April 1983. In May 1992 the head office and Tokyo Branch moved to Konan, Minato, Tokyo, where the company remains headquartered. It held its first construction technology presentation in June 1998 and launched its website in December 1999, also amending its articles to add the import and domestic sale of aircraft landing restraint equipment as a new business. In June 2000 a third-party allotment increased capital to 250 million yen, and in February 2001 it issued its first unsecured corporate bond (100 million yen). A defined-contribution pension plan was introduced in November 2003, and capital was reduced to 200 million yen in February 2004. In April 2004 Iwata Construction and Chizaki Industry established the holding company IC Holdings Co., Ltd., integrating management, and Chizaki DORO came under the holding company. An executive officer system was introduced in April 2005, and in July 2005 the entire company registered for ISO 9001:2000 quality management certification. The Chitose ready-mixed concrete plant was completed in June 2006. In April 2008 an organizational reform shifted management to a structure based on the Hokkaido Branch and a Honshu Supervisory Division. ISO 27001 information security certification was obtained in January 2009, and capital was increased to 350 million yen in March 2009. ISO 14001 environmental certification followed in March 2012. In June 2014 the company received branch manager awards from both the Hokkaido and Tohoku branches of NEXCO East Japan in the same fiscal year for the first time. In March 2015 it issued a second unsecured corporate bond (100 million yen). In July 2015 it opened the Oil Contamination Purification Center in Tomakomai, Hokkaido, described as Japan's first intermediate treatment facility for oil-contaminated soil operated by a licensed industrial waste operator. In December 2015 the Chitose sales office and dormitory were newly built and relocated to Kiyomizu, Chitose. OHSAS 18001 occupational health and safety certification was obtained in May 2016. In April 2018 the company marked its 50th anniversary and formulated its "Mid-Term Management Plan 2018." In October 2019 it formed a joint venture, Kawasaki Plant, with Keihin Recycling Center Co., Ltd. for the manufacture and sale of asphalt mixtures. In April 2020 uniforms were renewed for the first time in 28 years since 1992. In July 2020 it received a branch manager award (excellent construction) from NEXCO East Japan's Kanto Branch for the Joban Expressway Mito paving repair work executed by the Tokyo Branch. In April 2021 the Eniwa General Technology Center opened, housing the equipment center, training center and Hokkaido Branch Environmental Business Division; the "Mid-Term Management Plan 2021" was formulated and a new management philosophy, "Link the Road," was adopted. In September 2022 the company registered as a construction consultant with the Ministry of Land, Infrastructure, Transport and Tourism (registration No. Ken 4 Dai 10940, road sector). In April 2023 it received the 44th International Association of Traffic and Safety Sciences Award jointly with Hokkaido Airports Co., Ltd. for snow removal operations at New Chitose Airport. The company continues under the IC Holdings umbrella, with a mid-term plan starting in fiscal 2024 focused on human-capital management.

• Established by separating the paving division of Chizaki-gumi; capital 50 million yen; head office in Nishi-Shinbashi, Tokyo and Sapporo branch.

• Received Construction Minister registration (Wa) No. 5282 under the Construction Business Act.

• Capital increased to 100 million yen.

• Capital increased to 200 million yen.

• Opened Sendai, Nagoya and Osaka sales offices (now Tohoku, Nagoya and West Japan branches).

• Head office moved to Atago, Minato, Tokyo.

• Tokyo Branch opened in Atago, Minato, Tokyo.

• Head office and Tokyo Branch moved to Konan, Minato, Tokyo (current location).

• Held the first construction technology presentation.

• Launched company website; added import and domestic sale of aircraft landing restraint equipment as a new business.

• Capital increased to 250 million yen through third-party allotment.

• Issued first unsecured corporate bond (100 million yen).

• Introduced defined-contribution pension plan.

• Capital reduced to 200 million yen.

• Iwata Construction and Chizaki Industry established IC Holdings Co., Ltd.; Chizaki DORO came under the holding company.

• Introduced executive officer system.

• Company-wide ISO 9001:2000 quality management certification registration.

• Chitose ready-mixed concrete plant completed.

• Organizational reform; shifted to management by Hokkaido Branch and Honshu Supervisory Division.

• Obtained ISO 27001 information security certification.

• Capital increased to 350 million yen.

• Obtained ISO 14001 environmental certification.

• Received branch manager awards from both NEXCO East Japan Hokkaido and Tohoku branches in the same fiscal year for the first time.

• Issued second unsecured corporate bond (100 million yen).

Specialist infrastructure contractor focused on road paving, maintenance and environmental technologies, operating nationwide from a Hokkaido base under the IC Holdings group.

• Road paving and maintenance

  Core business of asphalt paving, repair and maintenance for national, prefectural and expressway roads.

• Airport construction and snow removal

  Airport-related civil works and snow removal operations, including at New Chitose Airport.

• Land development and readjustment

  Land readjustment and residential land development projects.

• Park construction

  Construction and landscaping of public parks.

• BIO-REMEDIATION

  Bioremediation technology using microorganisms to degrade oil contamination.

• Ready-mixed concrete

  Production of ready-mixed concrete at the Chitose plant.

• Asphalt mixtures

  Manufacture and sale of asphalt mixtures through the Kawasaki joint venture.

1. 1地崎道路株式会社chizakiroad.co.jp
2. 2地崎道路株式会社 | 沿革chizakiroad.co.jp
3. 3地崎道路株式会社 | 企業情報chizakiroad.co.jp
4. 4地崎道路株式会社 | 社長メッセージchizakiroad.co.jp
5. 5Chizaki DORO Co., Ltd. (Japan) - Wikidatawikidata.org