Private company

Japan Railway Construction, Transport and Technology Agency

Logo: 0village and Ramsal18, Public domain, via Wikimedia Commons3

Japanese railway construction public corporation

The Japan Railway Construction, Transport and Technology Agency (Japanese: 鉄道建設・運輸施設整備支援機構, Hepburn: Tetsudō Kensetsu Un’yu Shisetsu Seibi Shien Kikō), or JRTT, is an independent administrative institution of the Japanese government. It is responsible for developing, constructing and supporting railway infrastructure and railway-related technology.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Oct 1, 2003Founded1
  • HeadquartersHonchō1
  • Websitewww.jrtt.go.jp
  • Legal formIndependent Administrative Institution1
Yokohama Island Tower
Photo: Wiiii, CC BY-SA 3.0, via Wikimedia Commons5

The Japan Railway Construction, Transport and Technology Agency (Japanese: 鉄道建設・運輸施設整備支援機構, Hepburn: Tetsudō Kensetsu Un’yu Shisetsu Seibi Shien Kikō), or JRTT, is an independent administrative institution of the Japanese government. It is responsible for developing, constructing and supporting railway infrastructure and railway-related technology.2

Corporate structure

Japan Railway Construction, Transport and Technology Agency sits at the top of its group. 10 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What Japan Railway Construction, Transport and Technology Agency reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

The story

The Japan Railway Construction, Transport and Technology Agency was established on 1 October 2003 by an act of the National Diet through the merger of two public corporations: the Japan Railway Construction Public Corporation (JRCC) and the Corporation for Advanced Transport and Technology (CATT).

The JRCC had been established in March 1964 to oversee the construction of Shinkansen and other railway lines. In October 1998, the Japanese National Railway Settlement Corporation was merged into JRCC, following the completion of its role in liquidating the remaining assets of Japanese National Railways (JNR) after its division and privatization in April 1987.

CATT was formed in October 1997 through the merger of the Maritime Credit Corporation, which managed joint-ownership shipbuilding projects, and the Railway Development Fund, which provided subsidies for railway construction. The Railway Development Fund itself had been established in October 1991 from the remnants of the Shinkansen Holding Corporation, which had been responsible for holding the ownership of Shinkansen lines still under construction at the time of JNR’s privatization. In March 2001, the Association for Structural Improvement of the Shipbuilding Industry was merged into CATT.

From Wikipedia’s article on Japan Railway Construction, Transport and Technology Agency, shared under CC BY-SA 4.0.4

Products and brands

Lines of business

As its name implies, JRTT is involved in construction and technical support for railway and other transportation projects throughout Japan. JRTT has undertaken numerous railway construction projects during its existence,

As its name suggests, the Japan Railway Construction, Transport and Technology Agency is engaged in the construction and technical support of railway and other transportation infrastructure projects throughout Japan. Since its establishment, JRTT has overseen or supported the construction of numerous major railway lines, including the Nagoya Municipal Subway Meijō Line (opened 2004), the Kyushu Shinkansen (2004), the Meitetsu Airport Line (2005), the Tsukuba Express (2005), the Osaka Higashi Line (2008), the Tokyo Metro Fukutoshin Line (2009), the Narita Sky Access Line (2010), and the Hokkaido Shinkansen (2016). More recently, JRTT completed the Eastern Kanagawa Rail Link, which opened in stages beginning in 2023. The agency is currently responsible for ongoing construction of Phase 2 of the Hokkaido Shinkansen.

JRTT owns the lines it constructs and leases access to their respective railway operators.

In addition to railway construction, JRTT supports maritime transportation and research activities, including sponsorship of vessels such as the current ship used by the JR Miyajima Ferry. The agency also performs administrative functions related to the liquidation of JNR, including management of pension obligations for former employees.

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Subsidiaries

JRTT serves as the parent organization of the companies within the JR Group that have not been fully privatized, including the Hokkaido Railway Company, the Shikoku Railway Company, and the Japan Freight Railway Company.

JRTT was previously the parent organization of the West Japan Railway Company, Central Japan Railway Company, and Kyushu Railway Company, before its shares were later offered to the public as part of their privatization processes.

Under legislation passed by the National Diet in 2011, JRTT is required to allocate retained earnings from its non-railway businesses toward Shinkansen construction projects and capital investment in its subsidiary railway companies.

From Wikipedia’s article on Japan Railway Construction, Transport and Technology Agency, shared under CC BY-SA 4.0.4

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Acquisitions

  1. Succeeded Corporation for Advanced Transport and Technology1
  2. Succeeded Japan Railway Construction Public Corporation1

Timeline

  1. Oct 1, 2003Founded Founded1