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The total distance of the route is approximately 9.5 km (5.9 mi) with 9 stations and an estimated 320,000 passengers per day. The line was tentatively planned to be completed by 2029, but was deferred in 2011 by the government. In 2013, the Bangkok Metropolitan Administration took over responsibility for the Light Blue line project.
As of 2022, there is no plan to build this line.
Progress
The Yingluck Shinawatra-led Pheu Thai government, elected in July 2011, decided not to pursue plans to continue the Grey Line and the Light Blue Line, citing that the lines would not be feasible within their 4-year, 10-lines priority plan. The Bangkok Metropolitan Administration (BMA) was invited to consider both projects but they would have to fund them.
Given delays in 2013 and 2014 with tendering other priority mass transit lines related to the political crisis in Thailand, it is highly unlikely that the Light Blue line will be considered by either the BMA or the Mass Rapid Transit Authority for many years. As of 2022, there are no plans to implement the Light Blue line by the BMA.