It’s one of those weekends. From 11:45 PM Friday, April 14 to 5:00 AM Monday, April 17 there will be no service in either direction at High Street or at the 4/5 platforms at Borough Hall. A and C trains are being diverted to the F line between Jay Street-Metro Tech and West 4th Street, and 4 trains are not running to or from Brooklyn (5 trains don’t serve Brooklyn on weekends). Your options are to use the 2 or 3 to or from Clark Street or Borough Hall, the R or (late night) N to or from Court Street, or the A, C, or F to or from Jay Street in Downtown or York Street in DUMBO. All of these should be running normally, barring the unforeseen.
The following work week, 11:45 PM to 5:00 AM each evening, Monday, April 17 to Wednesday, April 19, there will be no service from Manhattan to High Street, and during those same hours from Wednesday, April 19 to Friday, April 21, no Manhattan bound service at High Street. Brooklyn bound (Monday-Wednesday) and Manhattan bound (Wednesday-Friday) A trains will be diverted to the F line during these hours, and C trains do not run late at night.