High Quality Content by WIKIPEDIA articles! The Regional Rail Link is a 47.5 kmrailway track under construction through the western suburbs of Melbourne from Southern Cross Station, running through Sunshine, Tarneit and meeting the Geelong Line at West Werribee. The rail line is being built at or above ground with the primary aim of improving grade separation with a specific focus on separating Geelong, Ballarat and Bendigo V/Line rail services from the Melbourne rail network and improving public transport services to the city`s growing western fringe.