On April 26, 1986, the north side tracks on the Manhattan Bridge leading to the IND Sixth Avenue Line were closed for rehabilitation, and services that had used the north side were moved to the south side, running via the BMT Broadway Line. Because of the large amount of train traffic now running on the bridge's south side tracks, rush hour and midday N service stopped using the bridge, and began running via the Montague Street Tunnel and Lower Manhattan making local stops. However, evening, night and weekend trains continued to use the bridge and express tracks, terminating at 57th Street–Seventh Avenue. B and D services were split. Their service from the Bronx and Upper Manhattan continued to run via the Sixth Avenue Line, terminating at 34th Street. Their service to Brooklyn, however, was rerouted via the Broadway Line express tracks. D service terminated at 57th Street, while B service terminated at Ditmars Boulevard during rush hours, and at Queensboro Plaza during middays, evenings, and weekends.