This weekend, from 11:00 PM Friday, March 1 to 5:00 AM Monday, March 4 there will be no Manhattan bound service at Court Street or at the R/N platforms at Jay Street-MetroTech, as R and N trains will be diverted over the Manhattan Bridge between DeKalb Avenue and Canal Street. All other lines should be running normally.
The following work week, the only planned (I stress planned) service disruption will be from 10:30 PM Monday, March 4 to 5:00 AM Tuesday, March 5, when there will be no service from Manhattan to High Street, as A trains will be diverted to the F line between West 4th Street and Jay Street-MetroTech. For those traveling into Brooklyn, during theses same hours A train service from Jay Street to Utica Avenue will be replaced by free shuttle buses.
For planned service changes that may affect travel on other parts of the system, either during the weekend or the following week, and for unplanned disruptions, see MTA Info.