Kurow Branch (Duntroon – Hakataramea portion) Mokai Tramway (TTT Co line, Putāruru to Mokai near Lake Taupō) New Zealand Midland Railway Company Limited Ohai Railway Board Port Chalmers Railway Company Limited Riccarton Racecourse Siding Rakaia and Ashburton Forks Railway Limited Sanson Tramway Taratu Railway (Lovells Flat) Thames Valley and Rotorua Railway Company Waronui (Coal) Railway (Milton) Waimate Gorge Branch Waimea Plains Railway Wellington and Manawatu Railway Company Limited Whakatane Board Mills Line Wilton Colleries Line Significant proposals Many railway lines have been proposed, especially in the 19th century, but never constructed. An 1873 map indicated that it was intended to link up all the current and authorised routes into a national network. Some proposals have been particularly significant due to their extent, publicity, or how close they came to being realised (in some cases, the track bed was built). Some significant proposals include: Auckland Airport Line – an extension of the Onehunga Branch to Auckland Airport, and/or a link from the airport to the NIMT at Puhinui. Other options also mooted. Auckland City Rail Link – underground rail link under central Auckland. Now an active project Avondale - Southdown Line (land corridor owned by KiwiRail) Canterbury Interior Main Line Connection of the Catlins River Branch and the Tokanui Branch Cromwell – Queenstown, proposed connection with the Kingston Branch extension before Otago Central Railway route chosen. Culverden – Reefton line Culverden to Tophouse, with branches from there to Nelson and Blenheim Dunedin Peninsula and Ocean Beach railway extension to Portobello and Taiaroa Heads. Extension of the East Coast Main Trunk Railway to link Gisborne and Rotorua by going inland from Opotiki up the Waiweka Gorge to the Moutohora Branch. So would link the Bay of Plenty to Gisborne and Palmerston North via the Palmerston North – Gisborne Line. Fairlie Branch – extension 27 km beyond Eversley, proposals to terminate the line in Burkes Pass East Cape tourist line via Hicks Bay Haywards–Plimmerton Line between the Hutt Valley Line and the Kapiti Line. Kakahi – Pūkawa (Lake Taupō) line Kennington – Waikiwi deviation to Invercargill Kingston Branch – extension to Queenstown Kirikopuni – Kaikohe line Kurow Branch – extension beyond Hakataramea Lewis Pass Railway (Reefton to Culverden) Little River Branch – extension to Akaroa Marsden Point Branch and its Waipu precursor Martinborough Branch Masterton – Waipukurau line via either Pongaroa or Castlepoint Mossburn Branch – extension to Te Anau Motueka to Tadmor