I’m calling this a “green light” weekend – late Friday night, October 12 to early Monday morning, October 15 – because there are no planned service changes that directly and adversely affect travel to or from any local stations. N trains will replace R trains in both directions at Court and Jay streets late at night.
Things get more complicated on late nights the following work week: Monday, October 15 to Friday, October 19. Each night from 9:45 PM to 5:00 AM there will be no 2 or 3 service in either direction at Clark Street or Borough Hall. Use 4. A, C, or N trains as options. During these same late night hours, there will be no Manhattan bound service at High Street, as Manhattan bound A and C trains are being diverted to the F line between Jay and West 4th streets.
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.