The Dhaka Subway, as distinct from the Dhaka Metro Rail (Bengali: ঢাকা মেট্রো), is an underground urban rail network being planned in Dhaka, the capital city of Bangladesh, by the Bangladesh Bridge Authority(BBA); an autonomous body responsible for the building and maintenance of bridges, tunnels, flyovers, and overpasses in Bangladesh, and a division of the Ministry of Road Transport and Bridges.