Just before approaching Second Avenue, the local tracks split into four tracks again. The two center tracks, which are not used in revenue service, dead-end just east of the Second Avenue station. They were built as part of the IND's proposed expansion in the 1930s, and would have merged with the never-built IND Worth Street Line and then entered Brooklyn. The line would have run to Utica Avenue in Brooklyn if it had been completed. Other provisions for unbuilt lines exist at the mezzanine levels of the Second Avenue and East Broadway stations, where unfinished open spaces indicate where stations for the Second Avenue Subway and IND Worth Street Line, respectively, would have been built.