The rail line will be closed between Portadown and Belfast Great Victoria Street on Sunday 11th September.
Bus substitution services will operate on September 11th between Belfast and Portadown, serving Lisburn, Lurgan and Moira as per the published timetable. Enterprise services will also be impacted by the line closure with a bus substitution service operating between Belfast and Newry.
Translink’s Project Manager Helen Halliday said, “This closure will allow us to carry out waterproofing at Stockmans Lane bridge and drainage works at a number of level crossings on the line between Lisburn and Portadown.
“Passengers wishing to travel on this date should arrive at their departure point in good time and allow extra time to reach their destination. Valid rail tickets will also be accepted on bus services operating on Lisburn Road in Belfast.
“We have placed passenger information notices at all impacted locations. Local residents have been advised of the works and we would like to thank passengers for their patience.”
Passengers can get further information online at www.translink.co.uk, by using the journey planner app, by tweeting @Translink_NI or calling the contact centre on 02890 666 630.