According to the MASS Rapid Transit of Thailand (MRTA), two consortiums have submitted bids for the PPP contracts for the Bangkok’s Pink and Yellow line that will be developed as monorails.

The 34.5 km Pink Line will link Khae Rai to Min Buri with 30 stations. The total project investment is estimated at THB53.5 billion (USD$1.51 billion). 

Bangkok's 30.4 km MRT Yellow Line will link Lat Phrao with Samrong with 23 stations. The total project investment is estimated at THB51.9 billion (USD$1.46 billion).

The bidders are the following:

•  A BSR joint venture comprising Ratchaburi Electricity Generating Holding, BTS Group Holding and Sino-Thai Engineering and Construction.
• A joint venture of Bangkok Expressway and Metro Public Co (BEM) and Ch Karnchang.

The wining bidders will provide maintenance services under a 30-year concession Land costs will be covered by MRTA.

17 prospective bidders expressed interest in the Yellow Line and 16 in the Pink Line. The bidding committee will take three months to consider the offers and the contracts are expected to be signed in April 2017.