The western junction of Jurong East is 20 minutes away from the city center on the MRT East-West Line. Traveling there by the North-South Line will take closer to 60 minutes.
The North-East MRT traverses up to Sengkang and Punggol on the northern coast of the island, but doesn't go to very many places of interest for even the most determined of travellers.
See Johor Bahru for information on crossing the Causeway and the Second Link from Malaysia.
