Bangkok Metropolitan Administration (BMA) has plans for four drainage tunnels under Bangkok to prevent the city being inundated, Bangkok governor Sukhumbhand Paribatra said on Thursday.
The construction of the four giant tunnels is planned for completion in five years at an estimated total cost of 16 billion baht, he said.
Construction of the first tunnel had began 10 years ago in eastern Bangkok. It would be completed in January.
The construction of this Rama IX-Ramkhamhaeng tunnel began in 2001, when the late Samak Sundaravej was Bangkok governor. It had a budgeted cost of 2.09 billion baht.