The MTA is bringing its "Fastrack" maintenance program to the A, C, and E lines this week.
Starting Monday night and for the next four nights, service will be suspended between 59th Street Columbus Circle in Manhattan and Jay Street-MetroTech in Brooklyn.
The suspension runs from 9:30 p.m. to 5 a.m. each night and is set to wrap up Friday morning.
A and E trains run via the 6th Avenue D and F lines.
C service will end early each weeknight.
For more information, go to mta.info.