On February 22, 1998, construction on the IND 63rd Street Line cut B and Q service to 57th Street–Sixth Avenue. Service on the 63rd Street Line was replaced by a shuttle running from the BMT Broadway Line. Trains originally operated from 57th Street–Seventh Avenue to 21st Street–Queensbridge, with 20-minute headways. On April 6, 1998, because the service did not terminate at an ADA-accessible station, the shuttle was extended to 34th Street–Herald Square on weekdays, skipping 49th Street via the express tracks. Normal service resumed on May 22, 1999.