The first in a series of overnight Irish Rail overnight track works in Kildare begins in Leixlip tonight.
The works, between Confey and Louisa Bridge stations, will take place between midnight and 6am, and will continue until Saturday.
On Wednesday night, works will take place at Fairgreen Road, Dunmurray Road and Dunmurry Drive in Kildare Town.
And "major works" will take place in Newbridge on Thursday and Friday.
These will be in place at College Farm, Ailesbury Park, Barretstown Lawn, Roseberry Court, Barreststown Meadows and Raymonda Court.
Irish Rail says these works may include
Points and Crossing maintenance
Plain Line Track maintenance
Bridge maintenance and Renewals
Night-time track works generally take place between midnight and 6am, except on Sundays when work can continue.