A much delayed 27 km extension to the Blue line finally began construction in mid-2011 . It was originally due for completion in late 2016 but the floods of 2011 added one year to the schedule . The first section of the Blue Line extension from Hua Lamphong &ndash; Tha Phra will open on 12 August 2019 . The next section from Tha Phra &ndash; Lak Song will then open in late September 2019 . The full extension will open in March 2020 . This will be over three years later than originally scheduled when construction started
floods
2011 Thailand floods
MRT Blue Line