From 11:45 p.m. tomorrow (Friday, October 21) to 5:00 a.m. Monday, October 24 there will be no 4 or 5 trains running in either direction at Borough Hall. Use 2, 3, A, C, R, or (late night) N trains as options.
The following work week (Monday, October 24 to Friday, October 28) each night from 11:45 p.m. to 5:00 a..m there will be no service in either direction at Court street or on the R/N platforms at Borough Hall. Use the 4 as an option. On these same nights from 10:00 p.m. to 5:00 a.m. F trains in both directions will be diverted to the A/C line, which means no service in either direction at the York Street station in DUMBO. Use the High Street station as an option.