Our run of good luck couldn’t last forever. This weekend, if your travel plans include Manhattan, there will be two complicating subway diversions. Manhattan bound A and C trains will be following the F line from Jay Street-Metro Tech to West 4th Street, so there will be no Manhattan bound service at High Street (though more than usual at York Street in DUMBO). For stops in lower Manhattan, take the 2 or 3 from Clark Street or Borough Hall, or the 4 from Borough Hall.
Don’t try to take the Manhattan bound R or N (which replaces the R late at night) from Court Street or from Jay, as these trains are being re-routed over the Manhattan Bridge between DeKalb Avenue and Canal Street. The 2, 3, 4, F, and G trains will all be running normally in both directions this weekend, and the Brooklyn bound A, C, N, and R trains will be running as usual.
The following week, A and C service to and from Manhattan will be affected between the hours of 10:00 p.m and 5:00 a.m. Monday to Friday. A trains will be diverted over the F line in both directions between Jay Street and 34th Street, and the C train, which normally runs until midnight, will stop running at 10:00. This will complicate matters for North Heights residents wanting to get to or from Penn Station during these hours; your best bet is to take the 2 or 3 (after midnight the 2, as the 3 won’t be running in either direction between midnight and 5:00 a.m. on the same nights) to or from Clark Street. You should also know that, during the 10:00 p.m. to 5:00 a.m. time frame on those nights, the A will be diverted to the D line in both directions between 59th and 34th in Manhattan, and the E will be running on the F line, making its last stop (and originating) at 2nd Avenue.