What is now the Archer Avenue subway was originally conceived as an extension of the IND Queens Boulevard Line under the IND Second System in the 1920s and 1930s. The original plans had a line diverging south of Van Wyck Boulevard station (now called Briarwood), running down what is now the Van Wyck Expressway to Rockaway Boulevard near modern John F. Kennedy International Airport. A bellmouth with two additional trackways was built to the east of the station to facilitate this extension, which was never constructed due to lack of funding.