Service disruptions that took the Manhattan Bridge north tracks out of service, with the shuttle running between Broadway–Lafayette Street and Grand Street, included the following:
During the first phase of the Manhattan Bridge rehabilitation, from April 26, 1986 to December 11, 1988,[3] the shuttle was extended to 57th Street/Sixth Avenue, running via the Sixth Avenue local tracks, and was called the Sixth Avenue Shuttle while the B and D terminated at 34th Street–Herald Square. Regular service had been expected to resume on October 26, 1986.[4]
The final Grand Street Shuttle service began on July 22, 2001, again between Broadway–Lafayette Street and Grand Street, while the B and D services were truncated to 34th Street–Herald Square. The Sixth Avenue Shuttle (which also ended at Broadway–Lafayette Street) was ended on December 16, 2001 with the rerouting of F trains to the 63rd Street Tunnel and introduction of the V train, and the Grand Street Shuttle was extended north to West Fourth Street–Washington Square.[5][6] On April 27, 2003, service was decreased to run every 15 minutes instead of every 12 minutes at all times except late nights.[7] The rehabilitation was finished on February 22, 2004, and the shuttle was discontinued. Also during this time, a shuttle bus ran between Canal Street and Grand Street.[8][9][10]
^"Washington Heights, Central Park West And Grand Concourse Riders Your Guide To Service Changes On The B D During Rehabilitation Work April 26 Through October 26, 1986". New York City Transit Authority. April 1986.