The line is often referred to as the Tokyo Rinkai Kosoku Tetsudo Rinkai Line (東京臨海高速鉄道りんかい線), including the name of its operating company, to distinguish it from the proposed Tokyo Rinkai Subway Line.
Overview
While not part of the Tokyo subway network (as it was built to JR specifications), the Rinkai Line is fully grade separated and runs underground for nearly 10 kilometers (6.2 miles) of its total 12.2 kilometer (7.6 mile) route, going as low as 40 meters (130ft) below the ground when crossing under the Port of Tokyo. The Shinonome – Shin-Kiba segment (which uses the former Keiyō Freight Line) is elevated.[citation needed]
Station list
All stations are located in Tokyo. All trains stop at every station on the line.
The TWR 70-000 series electric multiple unit (EMU) trains are based at Yashio Depot, which is accessed via a spur located between Tennōzu Isle Station and Tokyo Teleport Station (the spur track also provides access to Tokyo Freight Terminal), while the E233 series trains are based at Kawagoe Depot.[citation needed]
The first of a fleet of 31 new 10-car E233-7000 series sets were introduced on Saikyō Line, Kawagoe Line, and Rinkai Line services between Kawagoe and Shin-Kiba from 30 June 2013, displacing the fleet of 205 series EMUs.
A new train type will be introduced in 2024, replacing the 70-000 series. The new type was revealed to be designated as 71-000 series on 6 November 2023. The revised entry into service is scheduled to take place in the middle of 2025 rather than 2024.[citation needed]
TWR 70-000 series EMU in June 2022
TWR 71-000 series EMU in December 2025
A JR East E233-7000 series EMU on the Rinkai Line in June 2022
A JR East 205 series EMU on the Rinkai Line in July 2008
History
Construction of the line started in 1992, with the eastern end of the line using the right-of-way of the Keiyō Freight Line (abandoned in 1983). The first portion of the line between Shin-Kiba and Tokyo Teleport opened for service on March 30, 1996, initially under the name Rinkai Fukutoshin Line (臨海副都心線, Rinkai-fukutoshin-sen). The name was officially changed to the Rinkai Line on September 1, 2000. The extension to Tennōzu Isle opened on March 31, 2001, and the final portion to Osaki on December 1, 2002.
The project ran severely over budget, with an estimated final cost of over ¥440 billion. In 2005, the Rinkai Line's average ridership was 140,000 passengers per day and, in 2006, the line finally registered its first operational profit, although interest payments on ¥389 billion yen in debt have resulted in a consistent net loss since 1991. By comparison, the competing elevated Yurikamome line is profitable, thanks to lower construction expenses, higher ticket prices and popularity among tourists and leisure visitors for its scenic views.
However, the Rinkai Line's ridership has steadily increased since, reaching 200,200 passengers per day in 2010. The ridership is forecast to increase further due to future development planned for the area served by the line.[citation needed]
Station numbering was introduced to all Rinkai Line stations in 2016.
In spite of its severe financial situation, TWR was discovered to have made a five million yen donation to the Tokyo Metropolitan Government on October 16, 2009, to encourage the city's bid for the 2016 Olympic Games. The company stood to benefit financially if the games were held in Tokyo, as several of the proposed venues were located along the Rinkai Line.[citation needed]
In addition to its ownership and operation of the Rinkai Line, TWR is also involved in real estate and subcontracting/management of station- and building-related design.[citation needed]
In February 2024, TWR was announced as the planned operator of the proposed Tokyo Rinkai Subway Line. A connection between the Rinkai Line and the proposed subway line near Kokusai-Tenjijō Station has also been considered.
12"令和６年度決算の概要"[Summary of the FY2024 Financial Results](PDF) (in Japanese). Tokyo Waterfront Area Rapid Transit, Inc. 5 June 2026.
↑秋田新幹線用車両と埼京線・横浜線用車両の新造について[Akita Shinkansen, Saikyo Line, and Yokohama Line new train details](PDF) (in Japanese). JR East. 10 April 2012. Retrieved 10 April 2012.
↑新型車両で快適に 埼京・川越線、30日から導入[Comfortable new trains to be introduced on Saikyo/Kawagoe Line from 30th] (in Japanese). Japan: The Saitama Shimbun. 7 June 2013. Archived from the original on 2013-06-09. Retrieved 7 June 2013.
↑"中期経営計画2022"[2022 Mid-term Management Plan](PDF). March 2022. Retrieved 3 April 2022.
↑"東京臨海高速鉄道, りんかい線に71-000形を導入へ"[Tokyo Waterfront Railway to introduce 71-000 series trains on the Rinkai Line]. Japan Railfan Magazine Online (in Japanese). 6 November 2023. Archived from the original on 6 November 2023. Retrieved 6 November 2023.
1234"企業情報"[Company Information]. Tokyo Waterfront Area Rapid Transit, Inc. (in Japanese). Archived from the original on 30 November 2023. Retrieved 30 January 2024.
↑"りんかい線「駅ナンバリング」の導入について"[Introduction of Rinkai Line "Station Numbering"]. twr.co.jp (in Japanese). 22 March 2016. Archived from the original on 9 January 2023. Retrieved 9 January 2023.
123JR東日本のりんかい線買収でどう変わる?[What will change if JR East buys out the Rinkai Line?] (in Japanese). Japan. 22 August 2014. Archived from the original on 2014-08-29. Retrieved 30 August 2014.
↑報道特集NEXT, Tokyo Broadcasting System. November 7, 2009.
↑"都心部・臨海地域地下鉄整備事業の事業計画の検討について「東京都」及び「鉄道・運輸機構」と合意しました"[We have reached an agreement with the Tokyo Metropolitan Government and JRTT regarding the review of the business plan for the subway development project in the central Tokyo and waterfront areas.](PDF) (in Japanese). Tokyo Waterfront Area Rapid Transit. 2 February 2024. Archived(PDF) from the original on 2 February 2024. Retrieved 7 April 2026.
↑Sugiyama, Junichi (24 February 2024). "東京都「臨海地下鉄」2040年実現へ、東京臨海高速鉄道が営業主体に"[Tokyo aims to realize its "Waterfront Subway" by 2040, with Tokyo Waterfront Rapid Transit as the operating entity.]. Mynavi Corporation (in Japanese). Archived from the original on 30 September 2025. Retrieved 7 April 2026.
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