Description: Bayfront MRT Station (CE1/DT16) is an underground Mass Rapid Transit station on the Downtown Line Stage 1 in Singapore, formerly known as the Downtown Extension. It will connect the Marina Bay Sands Casino at Marina Bay to the Circle Line and the Downtown Line, linking the casino with the entire MRT system.escription: Bayfront MRT Station (CE1/DT16) is an underground Mass Rapid Transit station on the Downtown Line Stage 1 in Singapore, formerly known as the Downtown Extension. It will connect the Marina Bay Sands Casino at Marina Bay to the Circle Line and the Downtown Line, linking the casino with the entire MRT system.