Westfield Railway Station is 400 metres south of Westfield Junction, where the Eastern and Southern Lines of the Auckland Railway Network converge. It is near Westfield Junction, which is the junction of the Eastern and Southern Lines. It has an island platform layout and can be reached from a pedestrian overbridge at the end of Portage Road. The overbridge also spans the adjacent Westfield marshalling yards and gives access to KiwiRail's operations centre and locomotive facility.