 The Lilydale railway line was extended to Yarra Flats (now known as Yarra Glen) on 15 May 1888 with intermediate stations at Coldstream and Yering.Part of the structure included a long timber viaduct with 502 openings near Yarra Glen, spanning the Yarra River and the adjacent flood plains.The extension of the line from Yarra Glen to Healesville on 1 March 1889 required a 1 in 40 climb into a 154.4 metre tunnel with a corresponding descent at nearly the same grade.