ligne MRT Orange

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The MRT Orange Line (Thai: รถไฟฟ้ามหานคร สายสีส้ม) is an under-construction rapid transit line of the Mass Rapid Transit Authority of Thailand (MRTA) in the Bangkok Metropolitan Area, Thailand. When fully completed, the MRT Orange line will be 35.9 km (22.3 mi) long with 29 stations (7 stations will be elevated for 8.9 km (5.5 mi) and 22 will be underground for 27 km (16.8 mi)), including an interchange with the current Thailand Cultural Centre Station of MRT Blue Line). The MRT Orange Line is divided into two sections: the 22.5 km (14.0 mi) Eastern Section, running from Yaek Rom Klao to Thailand Cultural Centre, and the 13.4 km (8.3 mi) Western Section, extending from Thailand Cultural Centre to Bang Khun Non. Construction of the Eastern Section commenced in June 2017, and civil works were completed 100% as of June 2023. However, delays in awarding contracts for the signaling systems and rolling stock postponed the line’s opening. In December 2024, Bangkok Expressway and Metro Public Company Limited (BEM) signed a contract with Siemens Mobility and its consortium partners to supply rolling stock and signaling systems for both sections of the line. On August 6, 2025 the MRTA announced that the Eastern Section is projected to open to the public in late-2027 earlier than the previously announced opening date of 2028. Construction of the Western Section began in July 2024. As of the end of July 2025, civil construction had progressed to 14.06%. This section is expected to require approximately six years for completion, with an anticipated opening in July 2030.