As early as 1874, people dreamed of a railway in the North Shore. In that year, a petition was made for a line from Pearce's Corner (Wahroonga) to Sydney Harbour. When one local was approached, he said: "If I live to be as old as Methuselah, I will never see a railway". In 1875, a committee was formed at the Greengate Hotel (Killara).[citation needed] The Public Works Department was opposed, saying "either then or now, the line would run from nowhere to nowhere". In 1879, surveyors proved that a line between Pearce's Corner and Blue's Point was practical.[citation needed] In September of that year, the records of that survey were destroyed in the Garden Palace fire. In that year, Sir Henry Parkes tried to win votes in St Leonards by advocating a railway line and Harbour Bridge. There was much controversy where the line should terminate, and didn't go ahead. In 1884, it was proposed that a new line to Falcon Street (Crows Nest) would be built, and tenders were called, but the first accepted tenderers, Morton and Hardy, withdrew, and eventually the tender of E. Pritchard and Co. was accepted, and the line terminated at the present St. Leonards station.[citation needed]
Completed in May 1889, the North Shore Line was opened on 1 January 1890 as a single track between Hornsby and St Leonards. No Sunday service was given until the line was extended to the Sydney Harbour foreshore at Milsons Point on 1 May 1893.[citation needed] Transport between this original Milsons Point station and central Sydney was by ferry boat.
In the meantime agitation and preparation for the extension of the line to the harbour went on, and in a Parliamentary debate it was stated by Mr. Bruce Smith, Minister for Public Works: "The North Shore was peculiarly adapted for the establishment of fresh suburbs as the climate was exceptionally favourable, and if only means of communication was afforded, a large population would spring up there."[citation needed] Mr. Dibbs (afterwards Sir George) doubted its commercial value, said the work was farcical, and would be a sham and a failure. The Parliamentary Standing Committee on Public Works in 1889 did not report favourably on the scheme for extension to Milson's Point, but in 1890 an amended scheme was approved. Tenders for the construction to Milson's Point were let in April, 1891, to O. McMaster, but the line was not opened till 1 May 1893. A passenger on the first train from the Point says those on board struck matches in the Lavender Bay tunnel, and a banquet was held in a marquee at Turramurra, where the Hillview now stands.[citation needed]
New intermediate stations were built at Waitara (20 May 1895), Warrawee (1 August 1900), Killara (10 July 1899), and Artarmon (6 July 1898). As early as 1901, a station was called for Beechworth Road (Pymble), but the Railway Commissioner at the time said that "the movement is slightly premature" and was never built. Most of the North Shore line was duplicated between 1900 and 1909. In 1927 the line was converted to electric operation using a 1500 volt DC, overhead supply.[citation needed]
The construction works for the Sydney Harbour Bridge necessitated truncation of the southern terminus from Milsons Point to Lavender Bay.
When the Sydney Harbour Bridge was opened on 19 March 1932 a new Milsons Point station (on the bridge approach) came into operation and the North Shore Line was extended through it and over the Sydney Harbour Bridge to link with the underground lines of central Sydney. The result is that the two ends of the North Shore Line link to the Sydney railway system at Central and Hornsby.
After 1932 the original Lavender Bay station became a storage depot for electric trains, and the line connecting Lavender Bay to the North Shore line was reduced to single track. This line joins the current North Shore line at Waverton station.
In 2009, a second connection to the Main Northern line was added with the opening to the Epping to Chatswood railway line. This connecting line was removed and incorporated into the Sydney Metro in 2019.
The North Shore line officially starts at Central, with a junction with the Main Suburban line south of the Flying Junctions. The line runs through Central, then goes underground alongside the City Circle, with stations at Town Hall and Wynyard. There is a crossover north of Wynyard allowing southbound trains to terminate when there is trackwork in the City Circle. After Wynyard, the line emerges onto the western side of the Sydney Harbour Bridge. On the other side of the bridge is Milsons Point station. The line continues for a short distance to North Sydney station, which has 4 platforms. The outer two tracks are for through services, while the inner two tracks are loop lines for terminating trains.[3]
After North Sydney, the line snakes its way through Sydney's lower North Shore, passing Waverton, Wollstonecraft, St Leonards and Artamon stations. At Waverton is the small junction with the Lavender Bay line, providing access to Lavender Bay/North Sydney Sidings. This section of line also has the sharpest curve on Sydney's suburban network, at Wollstonecraft of 10 chains (200 m).[4] At Chatswood, there are 4 platforms, with the inner two used by Sydney Metro Northwest and formerly to enter the Epping to Chatswood rail link.[3]
The line continues up the North Shore region, with stations at Roseville, Lindfield, Killara, Gordon, Pymble, Turramurra, Warrawee, Wahroonga and Waitara. Lindfield has an additional bay platform in the centre, used to terminate trains from the south. A similar arrangement exists at Gordon, where the centre platform is connected to a loop line that can terminate trains in both directions. After Waitara, the line proceeds to Hornsby, where there is a junction with the Main Northern Line and Hornsby Maintenance Centre.[3]