Thursday brings is the last night riders of the B, D, F and M lines will encounter late-night changes in Manhattan because of the Metropolitan Transportation Authority's Fastrack program.
The shut-downs are in both directions between 57th Street and West 4th Street so crews can do maintenance work.
The closures start at 10 p.m. and run until 5 a.m. Friday.
The program then moves to the 4, 5 and 6 lines from June 11-15.
For more information, visit mta.info.