Cumberland Line

The construction of a 1.6 km (0.99 mi) Y-Link between Harris Park and Merrylands was first proposed in 1993 as part of the Australian Government's Better Cities Program. It was intended to allow direct services between Campelltown and Parramatta, which was becoming Sydney's second CBD. Construction started on 16 March 1995 and the new link was officially opened on Saturday 2 November 1996. Timetabled services began the next day, running between Blacktown and Liverpool or Campbelltown, approximately every 30 minutes. There was a total of 35 trains each weekday running between 6am and 9pm, with a reduced hours (7am-7pm) on weekends.

Service was suspended on the line during the 2000 Olympics to provide extra trains to Olympic Park, with passengers required to change at Granville as before the link opened.

In 2004 all services were cancelled for several days in February, May and July due to ongoing driver shortages. With the shortage getting worse, a timetable change came into effect on 24 July 2004, which along with changes on other lines, reduced the Cumberland Line to 5 services a day on weekdays only (3 in the morning peak, 2 in the afternoon).

In 2006, the then-Iemma Labor Government's NSW State Plan committed to re-introduce a regular half-hourly service to the Cumberland line during 2007 "subject to detailed timetable and train planning... and fleet delivery, availability and rostering". A CityRail news release on 15 December confirmed this intention, based on the gradual introduction of the then-new OSCAR (H set) trains, which would displace outer suburban Tangara G sets; the latter trains then reassigned to suburban service. This promise was not delivered, and by 2009 it was still on 5 services a day.

Daytime half-hourly services were re-introduced on 21 October 2013. Services finished in the early evening and did not operate on weekends. At this time, the line was also officially extended to Schofields, where most northbound services terminated.

As part of a major timetable change for the Sydney Trains network on 26 November 2017, Cumberland Line services were modified to no longer travel to and from Campbelltown, instead starting and terminating at Leppington. Simultaneous changes to the Airport, Inner West & South Line saw that line split into the Inner West & Leppington Line and Airport & South Line. These changes mean the section of the network between Glenfield and Macarthur is served exclusively by services operating via the East Hills railway line. The changes also saw late night and weekend services introduced on the Cumberland Line. The late night services extend to Richmond, replacing T1 services at these times. On weekends, trains operated between Schofields and Liverpool only with early morning and late night services extending to Leppington and Richmond.

Route

Physically, the line consists of the Richmond railway line from Schofields/Richmond to Blacktown, the Main Western Line from Blacktown station to Harris Park, the 'Y-link' as described below, the "Old Main South" between Merrylands and Cabramatta, the Main South Line between Cabramatta and Glenfield, and the South West Rail Link between Edmondson Park and Leppington.

Y-link

The Y-link consists of a triangular junction at the junction of the 'Old Main South' and the 'Main Western Line. The junction is partially grade separated with a flyover for the 'Up Old Main South' to cross the Y-Link tracks.

Service Frequency

The Cumberland Line runs at an average frequency of 2 trains per hour 7 days a week, however the termini vary as follows:

Fleet

The line has a captive fleet of 4 car Millenniums, supplemented by 8 car Waratah sets from the T1 and T2 lines during offpeak hours.

Stations

Patronage

The following table shows the patronage of Sydney Trains network for the year ending 30 June 2024.