Rimutaka Tunnel The first shot was fired in 1948 when the Public Works Department started the tunnel with bores of at the western end and at the eastern end. A contract for completing the tunnel was let to a consortium of Morrison Knudsen Inc. and Downer and Company on 7 May 1951. The work commenced at the west end in July 1951 and at the east end in August. The contract was expected to be completed in four years, but the headings met on 20 April 1954 with the concrete lining finished a month later. New Zealand Railways took possession of the
Yimbun Railway Tunnel significant as a highly intact example of a concrete-lined railway tunnel constructed for Queensland's narrow-gauge railway lines. Concrete was first used as a tunnel lining in 1880 and since then has been used for approximately two dozen railway tunnels constructed in Queensland. Yimbun Railway Tunnel Yimbun Railway Tunnel is a heritage-listed tunnel at Sinnamons Lane, Harlin, Somerset Region, Queensland, Australia. It was designed by Queensland Railways and built from 1909 to 1910 by Queensland Railways. It was added to the Queensland Heritage Register on 27 November 2008. The Yimbun Railway Tunnel, located from Wulkuraka railway station, is a concrete-lined tunnel