 As part of the project, Ninth Street's platforms would have been lengthened from to .Though the Transit Commission ordered the BMT to lengthen these platforms in September 1923, progress on the extensions did not occur until February 16, 1925, when the New York City Board of Transportation (NYCBOT) directed its engineers to prepare plans to lengthen the platforms at this and eleven other stations along the Fourth Avenue Line.It estimated the project's cost to be $633,000 ().