Upper Hutt way on Saturday, Sunday, and public holidays. A notable feature of this section of railway is the Rimutaka Tunnel, the second-longest railway tunnel in New Zealand, which replaced the Rimutaka Incline in 1955. There are six railway stations within the boundaries of the city: Silverstream, Heretaunga, Trentham, Wallaceville, Upper Hutt (the main station for the city and outer terminus of electric services), and Maymorn (a request stop on the Wairarapa Line). Upper Hutt's main railway station was originally built in 1876 but has been rebuilt twice, firstly in 1955 and more recently in 2015. The most recent rebuild, jointly funded
Otira Tunnel tunnel in the world and the longest in the British Empire. The Midland Railway Company investigated options to a long tunnel; but a line over the pass with gradients of 1 in 50 on both sides was not practical. Other options for a line over the pass were a cable-hauled system or a line of 1 in 15 gradient using either the Fell system or a rack railway using the Abt system (or even a S-shaped tunnel under Mount Rolleston). However the government did not favour the Fell system as used on the Rimutaka Incline which was expensive to operate.