From 10 p.m. to 5 a.m. Monday, Jan. 23 through early Friday morning, Jan. 27 and from Monday, Jan. 30 through Friday, Feb. 3 there will be no service between Grand Central and Atlantic Avenue-Barclays Center.
4 trains will run local between Woodlawn and Grand Central and 5 service will end each night.
Overnight 3 service will be extended into Brooklyn, making all 4 line stops to provide alternate service.
Six trains will run between Pelham Bay Park and Grand Central.
For alternate service between lower Manhattan and Brooklyn, riders can take an R or W train before 11:30 p.m. and N and R train late night.
The MTA uses FASTRACK to perform maintenance work in tunnels and stations and make track repairs.
FASTRACK work is also slated for the B, D, F and M lines in February and the L line in April.