The only planned service change directly and adversely affecting any local stations this weekend — late evening Friday, August 11 through early Monday morning, January 14 — is that 4 trains will not be serving Brooklyn in either direction. This means there will be no service at the 4/5 platforms at Borough Hall, as 5 trains do not serve Brooklyn on weekends. 2 and 3 trains should be running normally and, for those going to or from stations within Brooklyn, 2 and 3 trains will be serving all 4 train stops between Borough Hall and Franklin Avenue-Medgar Evers College, and 3 trains will serve all stops between Franklin Avenue and New Lots Avenue. For those traveling to or from the East Side of Manhattan, transfer between 2/3 and 4/5 trains at Fulton Street. There will be extra service in both directions all weekend at Court Street and at the N/R platforms at Jay Street-MetroTech, as N trains will be re-routed to the R line betweem Dekalb Avenue in Brooklyn and Canal Street in Manhattan.
The following work week — Monday, August 14 through Friday, August 18, late nights Monday to Tuesday and Tuesday to Wednesday there will be no service in either direction at Clark Street or at the 2/3 platformsa t Borough Hall, as 2 train service will be suspended in both directions between Atlantic Avenue-Barclays Center in Brooklyn and Chambers Street in Manhattan. Use 4, A, N, or R trains as options. Late nights Monday to Tuesday, Tuesday to Wednesday, and Wednesday to Thursday there will be no Manhattan bound service at York Street in DUMBO, as Manhattan bound F trains will be re-routed to the A/C line between Jay Street-MetroTech in Brooklyn and West 4th Street-Washington Square in Manhattan. There will therefore be additional Manhattan bound service at High Street. To get to the LES stations on the F take a Manhattan bound A or F from Jay or High Street to West 4th, and take a Brooklyn bound F from there back to the skipped station. Thursday night to Friday there will be no Brooklyn bound service at High Street, as Brooklyn bound A and C trains will be re-routed to the F line between West 4th Street-Washington Square in Manhattan and Jay Street-MetroTech in Brooklyn. This means there will be extra Brooklyn bound service at York Street in DUMBO.
Always check MTA Info for last minute changes in planned service or 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. You can also get real time service alerts: register here.