A 1929 proposal included a spur off the line that would have run from Van Nest to Baychester. The spur was to begin near Garfield Street as an elevated line then run underground beneath Morris Park Avenue and Wilson Avenue, finally terminating at Boston Road, where it was to connect to the formerly proposed Concourse Line extension. This proposal was never carried out, however the IRT acquired the former New York, Westchester and Boston Railway right-of-way to create the IRT Dyre Avenue Line instead.