Progress Update: Purple Line Metro Tunnel Construction Reaches 70% Completion

According to a report by Matichon Online on August 21, 2026, Italian-Thai Development (ITD) has provided a progress update on the construction of the MRT Purple Line, specifically the Tao Poon to Rat Burana section. The company released visual documentation confirming that work on Contract 3 has reached 70.22% completion.

For residents and travelers in Bangkok, this milestone indicates that the underground infrastructure for this critical transit expansion is advancing steadily. The Purple Line extension is designed to improve connectivity between the northern and southern parts of the city, potentially reducing travel times and easing traffic congestion once fully operational.

While the physical construction of the tunnel is well underway, several factors remain to be confirmed. The public is still awaiting official announcements regarding the final timeline for the installation of track systems, the procurement of rolling stock, and the projected date for the commencement of trial runs. Furthermore, while the tunnel structure is progressing, the completion of station interiors and surface-level traffic management plans will be essential for the line to serve the public effectively. Stakeholders should continue to monitor official updates from the Mass Rapid Transit Authority of Thailand (MRTA) for information regarding the project's next phases and final delivery schedule.