<P> In May 1995, the north tracks were closed during midday and weekends and D service was cut south of 34th Street - Herald Square . On July 22, 2001, it was closed at all times and D service was cut again . In Brooklyn, it was replaced by Q local service . </P> <P> After September 11, 2001, C service was suspended . On weekends, the D ran local on the Eighth Avenue Line north of 59th Street to fill in the gap in service caused by the suspension . </P> <P> On February 22, 2004, full service on the Manhattan Bridge was restored and D trains were extended via the north tracks of the bridge to Brooklyn, replacing the W as the Fourth Avenue Express (late nights local) and West End Local to Coney Island--Stillwell Avenue . The D was moved to the West End Line instead of returning to the Brighton Line, which it had run on since 1967, to provide 24 - hour service to both the Concourse Line and West End Line and avoid running two separate (B and D) shortened services outside of weekdays . This eliminated the need to run late - night and / or weekend shuttles on the West End Line as done prior to 2002 . </P> <P> From May 24, 2004 to Fall 2004, construction on the IND Concourse Line required the suspension of D express service in the Bronx . </P>

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