By 1908, goods traffic on the line to Darling Harbour and the neighbouring suburban lines had become excessive, with 592 wagons arriving each day and 512 being dispatched. It was decided to construct separate goods lines from Sefton to Darling Harbour via Enfield, Dulwich Hill and Rozelle, with extensions to Botany and the State Abattoirs at Homebush Bay. The initial scheme, approved by the Parliamentary Committee on Public Works, approved the initial line from Dulwich Hill to Darling Harbour. To avoid an opening rail bridge alongside the existing Glebe Island Bridge, a circuitous route was built around Rozelle Bay through the suburb of Pyrmont. The proposal, which included two tunnels under Pyrmont and Glebe, was approved on 23 November 1914, and the line opened on 23 January 1922.