From 9:45 PM Friday, July 20 to 5:30 AM Monday, July 23 Brooklyn bound F trains will be diverted to the A/C line between 50th Street in Manhattan and Jay Street-MetroTech, so no service from Manhattan to York Street, or from the LES stops on the F. To get to Brooklyn from them, take a Manhattan bound F to West 4th and change there for a Brooklyn bound A, C, or F. From 11:30 PM Friday to 5:00 AM Monday no 3 trains will be running, but 2 trains should be running normally, and will make all 3 stops in Brooklyn to Franklin Avenue. Also from 11:30 PM Friday to 5:00 AM Monday there will be no R trains running, but N trains will provide alternate service.
The following work week, Monday, July 23 to Friday, July 27 each night from 9:45 PM to 5:00 AM, Manhattan bound A and C trains will be diverted to the F line between Jay Street and West 4th, so no service from High Street to Manhattan. For Manhattan below West 4th, use the 2 or 4 instead. Each night from 10:45 PM to 5:00 AM there will be no Manhattan bound service at Court Street, as both N and R trains are being diverted over the Manhattan Bridge. Each night from 9:45 PM to 5:00 AM there will be no 2 trains running. 2 trains will provide alternate service, making all 3 stops to Franklin Avenue, and 4 trains will will make all 3 stops from Utica Avenue to New Lots Avenue.
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.