Mass Rapid Transit Authority of Thailand (MRTA) and Northern Bangkok Monorail Co Ltd (NBM) will sign the construction contract for the Bt4.23-billion MRTA Pink Line spur between Si Rat and Muang Thong Thani stations on Tuesday.

Despite construction delays, the elevated MRTA Pink Line between Khae Rai and Min Buri will begin operating in September 2021, aiming for 200,000 passengers per day.