North of this station, there is an unused trackway, splitting from the southbound local track for a proposed subway under Fourth Avenue (later built as the BMT Fourth Avenue Line). It merges with the Manhattan-bound express track and ends on a bumper block between the two express tracks at Nevins Street. When this station originally opened in 1908 it was the terminal for the line, and had two side platforms, an island platform, and two tracks. All the platforms were connected together at their southern ends.