 It was added to the New South Wales State Heritage Register on 30 August 2013.The Main West Railway Line runs from Granville to Bourke and was completed in 1885.By 1900 certain sections of John Whitton's single track railway network were operating at or near saturation, these included the famous Zig Zag near Lithgow, the Main West from Emu Plains right through to Bathurst, the Main South from Picton as far as Harden and the Main North between Maitland and Muswellbrook.