Transperth services on the Mandurah train line will be cancelled at night between Cockburn Central and Perth stations next week to allow for maintenance works on the line.
The night closures will start on Sunday July 30 and will last until Thursday August 3.
The last full line service on the Mandurah line on Sunday night will depart Perth at 7.45pm and Mandurah at 6.49pm.
From Monday to Thursday, the last full service will depart Perth at 8.08pm pm and Mandurah at 7.27pm.
Normal timetables will resume the next morning.
A train replacement bus, route 909, will run on the Mandurah line during the closures.
Passengers travelling to Joondalup should note trains will be leaving from Platform 6 in Perth once the closure is operating each night, instead of continuing on from the Mandurah service.
Transperth advised passengers to allow extra travelling time and to be aware that replacement buses may not connect with timetabled bus and train services.
They also reminded passengers that surfboards and bicycles are not allowed on Transperth buses, including train replacement services.
For assistance call the Transperth InfoLine on 13 62 13 or visit transperth.wa.gov.au.