Rimutaka Incline to bypass formation land that is now in private ownership. The original route from Upper Hutt to the Mangaroa valley is not included in the trust’s plans. Work on the project is currently at stage one, with the acquisition of rolling stock for restoration, fencing, track laying in the yard, and the construction of a rail vehicle shed. Rimutaka Incline The Rimutaka Incline was a , gauge railway line on an average grade of 1-in-15 using the Fell system between Summit and Cross Creek stations on the original Wairarapa Line in the Wairarapa district of New Zealand. The term "Rimutaka
Rimutaka Tunnel tunnel. Detailed surveys were completed in 1938/1939, but the project was again postponed due to World War II. After World War II it became a matter of urgency to consider a replacement. The H class locomotives were showing their age, the Incline was in bad shape, and maintenance costs were increasing. Between September 1945 and July 1947 four options were considered. It was accepted that no contour line could be the solution and that a tunnel under the Rimutaka Ranges was the only satisfactory answer. The adopted route was the shortest route, a tunnel between Mangaroa and Lucena’s Creek gully.