Thailand’s State Railway of Thailand (SRT) is pushing forward with the Red Line Salaya–Nakhon Pathom extension, a 25.3-kilometre rail project scheduled to open in 2033. This initiative includes two additional Red Line extensions, expected to begin construction in 2026, with agreements set for March and June that year. The extensions aim to enhance connectivity from Rangsit to Thammasat University and from Taling Chan to Salaya, reaching completion by 2029.
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Originally studied in 2007, the Salaya–Nakhon Pathom extension needed updated data to reflect urban growth and evolving travel patterns. SRT is conducting a new study focusing on environmental impacts and optimal design, running the line at ground level from Salaya to Nakhon Pathom with seven stops, including Wat Suwan and Khlong Maha Sawat stations. The study is set to conclude by 2027, followed by approvals and environmental assessments by 2029, and construction starting in 2030.
Experts anticipate the project influencing local real estate dynamics. Michael Kenner of FazWaz predicts a shift in housing demand toward condominiums and commuter towns, spurred by rail access connecting Salaya’s educational and medical hubs to central Bangkok. Enhanced rail access could benefit areas such as Krathum Lom and Sam Phran, providing faster connections and encouraging residential growth due to lower land costs.
Moving forward, SRT is aligning this project within the M-Map 2 framework, which prioritizes urgent railway expansions. Future considerations include resolving design issues affecting other segments like the Bang Sue–Makkasan–Hua Mak line, reported The Thaiger.
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Adapted by ASEAN Now · The Thaiger · 20 Mar 2026