The A train will not run above 59th Street from 10 p.m. to 5 a.m. Monday through Friday.
The L train resumed service following signal problems, the MTA said.
The stairs, which have been closed since April, will not reopen until Aug. 25, the MTA said.
The line will close down between the Nassau and Court Sq. stations starting Friday, July 25.
The 1, 2, 4, 5, 6, 7, A, C, D, F, N, Q, R and S lines will be impacted by MTA work.
A deaf and mute man had no interaction with the suspect before he was attacked, police said.
The 2, 4, 5, 6, 7, A, C, D, E, F, G, N and R lines will all have service changes this holiday weekend.
Police subdued Christopher Brown, 24, after he resisted arrest on an F train, video shows.
The stations will close from Saturday, July 5 until February 2015, the MTA says.
Police are looking for a man they say attacked a woman in the Ralph Avenue subway station.
A woman survived a fall on subway tracks in Midtown, officials said.
The MTA's independent consultant cited " significant schedule risks" in the long-in-the-works project.
Construction will cause changes on the 4, 5, 6, 7, A, C, F, Q and S lines.
A train stations north of 168th Street will be skipped on weekends starting late Friday.
A broken rail caused major delays Thursday at about 5 p.m.
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