The only planned change directly affecting service at local stations this weekend will result in extra service in both directions at Court Street and on the R/N platform at Jay Street-Metro Tech, as N trains (which normally replace R trains late at night) and Q trains are being diverted over this route all weekend. The following week, from 11:45 p.m. to 5:00 a.m. Monday to Friday, there will be no 4 train service in either direction. Since the 5 doesn’t run to or from Brooklyn during these hours, there will be no service at the 4/5 platform at Borough Hall during these hours. During the same times, the N and Q will both be running on the R/N line serving Court Street and Jay Street.
There will be other diversions and skipped stations affecting travel in Manhattan, the Bronx, Queens, and deeper into Brooklyn. For details on these, check MTA Info.