In 1888, work started on the double track Flinders Street Viaduct linking the station to Flinders Street station. The line was initially only used by freight trains, with passenger train operations commencing in 1894. It was at that time that the first through platform was provided at the station, used by suburban trains from Essendon and Williamstown. The viaduct to Flinders Street was expanded to four tracks in 1915, and, in conjunction with the electrification works on the suburban network, today's platforms 11 to 14 were opened between 1918 and 1924, along with a pedestrian subway providing access to them.