WestNet Rail is the operator of approximately 5000 kilometres of former WAGR

Western Australian Government Railways

Western Australian Government Railways was most common name of the Western Australian government rail transport authority from 1890 to 1976. It is, in its current form, known as the Public Transport Authority of Western Australia....

 railway track in Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

, leased from the State of Western Australia following the sale of Westrail

Westrail

Westrail was the name of Western Australia’s public rail service between 1975 and 2000.It had its origins in 1877 as the Department of Works and Railways. This became Western Australian Government Railways in 1890 — a name that persisted for almost a century...

 in 2000.

WestNet Rail provides track access to rail operators including the Australian Railroad Group

Australian Railroad Group

Australian Railroad Group was one of Australia's largest private rail operators, operating across almost 10,000 kilometres of track and began operating in Western Australia on 17 December 2000 following its purchase of the Westrail freight business. It was acquired by QR National...

 and other interstate traffic. WestNet Rail is responsible for maintaining the track infrastructure, signalling, level crossings, supply of the train control function and determination of track access fees.

On 14 February 2006 it was announced that WestNet was to be sold to Babcock and Brown

Babcock and Brown

Babcock & Brown was a global investment and advisory firm based in Sydney, Australia that went into liquidation in 2009. It was best known in financial markets for structured finance deals. The company had at its peak 28 offices and over 1,500 employees worldwide. Although headquartered in Sydney,...

 and Queensland Rail

Queensland Rail

Queensland Rail, also known as QR, is a government-owned railway operator in the state of Queensland. Under the control of the Queensland Government, Queensland Rail operates the inner-city and long-distance passenger services, as well as some freight operations and gives railway access to other...

.
On 19 May 2008 The Financial Review identified the only owner as Babcock and Brown Infrastructure in a map and article titled Trainspotting