Upgrade of the Dun Mountain Trail from Copper Mine Saddle to South Branch River
Nelson City Council
Dun Mountain Trail, Brook Valley, Nelson
Realignment of existing track to meet gradient requirement for cycling and improve surface for walking.
Nelmac has been contracted to upgrade the entire Dun Mountain Trail over several years, carrying out the work in stages to avoid interruptions for users whenever possible.
The section of upgrade from Copper Mine Saddle to the South Branch River was a project to adjust the existing track, which was extremely rough, to meet the standards of New Zealand’s Cycle Trail network. At the same time, we were able to improve the surface for walkers who also have access to the trail.
Using equipment from a 1.5 tonne digger right down to various hand tools, the work included installation of drainage swales, box culverts and cut off drains, and installation of rock retaining and rock placement for stream crossings. Our experienced track cutters had to consider the line, the gradient, and attempt to minimise vegetation loss and disturbance when planning the new route.
Given the high rainfall the area can experience, ensuring effective drainage was a critical consideration to ensure the longevity of the track service.