The IND Queens Boulevard Line is a line of the B Division of the New York City Subway in Manhattan and Queens, New York City, United States. The line, which is underground throughout its entire route, contains 23 stations. The core section between 50th Street in Hell's Kitchen, Manhattan, and 169th Street in Jamaica, Queens, was built by the Independent Subway System (IND) in stages between 1933 and 1940, with the Jamaica–179th Street terminus opening in 1950. The line's construction promoted housing growth along the Queens Boulevard corridor and stimulated the urbanization of central Queens, and there are multiple provisions for spur routes along the Queens Boulevard line that were never built. As of 2015[update], it is among the system's busiest lines, with a weekday ridership of over 460,000 people.
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