The IND Fulton Street Line is a rapid transit line of the IND Division of the New York City Subway, running from the Cranberry Street Tunnel under the East River through all of central Brooklyn to a terminus in Ozone Park, Queens. The IND Rockaway Line branches from it just east of Rockaway Boulevard. The A train runs express during daytime hours and local at night on the underground portion of the line; it runs local on the elevated portion of the line at all times. The C train runs local on the underground portion of the line at all times except late nights. The line runs primarily along Fulton Street, Pitkin Avenue, and Liberty Avenue. The underground portion, which constitutes the majority of the line, was built for the city-owned Independent Subway System (IND), opening between 1936 and 1956. The elevated portion in Queens was originally part of the Brooklyn–Manhattan Transit Corporation (BMT)'s Fulton Street elevated line; the Elevated in Brooklyn was closed and demolished in stages with the opening of the subway line. Description and service The following services use part or all of the IND Fulton Street Line: Under Fulton Street, the line is mainly single level, except at Nostrand Avenue, where the express tracks are on the upper level and the local tracks are on the lower level. During the subway line's construction in the late 1930s and early 1940s, the old, now-demolished BMT Fulton Street Elevated (which the IND line replaced) had to be supported. The stations along Liberty Avenue in Queens, from 80th Street–Hudson Street through Ozone Park–Lefferts Boulevard, as well as the current three-track elevated structure, were built for the elevated Fulton Street Line in 1915 as part of the BMT's portion of the Dual Contracts. This was the only section of the Fulton El that was built specifically to handle steel subway cars, as opposed to lighter wooden elevated cars. The current service pattern along the line is one of the newest in the New York City Subway system. Prior to December 1988, express service was only provided during rush hours, and before 1999, all trains ran local on weekends and weekday evenings after 9:00 pm. Since May 2, 1999, A trains run express along the line and C trains run local except during late nights, when A trains make all stops. Route Entering Brooklyn via the Cranberry Street Tunnel as a