The route would provide a vital north - south link for a distance of 16.25 km with 15 planned stations and is expected to cost 27 billion baht.
[2] A new EIA for the line was completed and approved by the National Environment Board in early March 2022.
[3] On 17 March 2022, the BMA held a market sounding seminar with companies interested in potentially bidding for the line and updated that the feasibility study would be completed by early June 2022.
The government suggested the Bangkok Metropolitan Administration pursue construction but stated that the BMA would have to fully fund the line itself.
[9] In May 2014, a consultant was contracted to undertake a financial feasibility study of the line, scheduled to complete the work by the end of 2014.
In June 2018, the Bangkok Metropolitan Administration (BMA) vowed to revive the project by rectifying the EIA and resolve opposition from locals in the Thong Lor area.
In August 2021, the BMA hired consulting firms to provide analysis for a public-private partnership (PPP) to build the line.
[16] However on 17 March 2022, the BMA held a market sounding seminar with companies interested in potentially bidding for the line and updated that the feasibility study would be completed by early June 2022.
Reporters in attendance also noted that the newly elected BMA Governor had expressed a preference for the MRTA to handle the project.