Which New York City Subway line opened its first section in 1933 as the IND’s route into Queens?

The Queens Boulevard Line opened its first section in 1933 as the Independent Subway System’s route into Queens.

The initial section ran from 50th Street in Manhattan to Roosevelt Avenue–74th Street in Queens. It formed a major east–west subway corridor beneath Queens Boulevard and was built by the city-owned IND, whose goal was to expand public ownership and competition with the privately operated IRT and BMT systems.

The line was extended farther east in stages. Service eventually reached Jamaica–179th Street, and the corridor became one of the busiest parts of the Queens subway network. Today, the E, F, and R services use portions of the line, while the M uses the western section.

The Queens Boulevard Line is distinct from the IND Crosstown Line, which runs north–south through Brooklyn and Queens and connects with it at Court Square.