The Metropolitan Transportation Authority is bringing its "Fastrack" maintenance and repair program to the 2, 3 and 4 subway lines in Brooklyn this week.
Some trains will be running express while the work is done.
Starting Monday night and for the next three nights, 2 and 4 trains will run express in both directions between Atlantic Avenue-Barclays Center and Franklin Avenue.
Those trains will skip Bergen Street, Grand Army Plaza, and Eastern Parkway.
Free shuttle buses will run between Atlantic and Franklin.
Number 3 trains end early each night between Chambers Street and New Lots Avenue.
The service changes run each night from 10 p.m. to 5 a.m. and the work is set to wrap up Friday morning.
For more information, visit mta.info.