I’m declaring this weekend — late night Friday, March 3 to early morning Monday, March 6 — to be a “green light weekend,” as there are no planned cancellations or route diversions directly affecting service at any local stations. 2 trains will be running on a reduced schedule, every twenty minutes, on Saturday and Sunday, but 3 trains should be running normally except during late nights, when they don’t serve Brooklyn.
The following work week — early morning Monday, March 6 to late evening Friday, March 10 — there are a number of planned changes affecting late night service. Once again, late nights from Monday to Tuesday through Thursday to Friday, there will be no Manhattan bound service at High Street, as Manhattan bound A and C trains will be diverted to the F line between Jay Street-MetroTech and West 4th Street-Washington Square. On these same late nights there will be no R train service in Manhattan or Queens above Whitehall Street, the R station closest to Brooklyn. N trains will replace R service in Manhattan, and, late nights Monday to Tuesday through Wednesday to Thursday, will run in both directions at Court street and at the N/R platforms at Jay Street-MetroTech.
Always check MTA Info for unplanned service changes that may affect local service or service on other parts of your trip, or for planned service changes that affect stations to or from which you may be traveling.