the Bridge To Nowhere is a concrete road bridge spanning the Mangapurua Stream in the Whanganui National Park. It has no roads leading to it, but it is accessible by mountain bike or tramping on a variety of different tracks, or by boat or kayak, followed by a 45-minute (one way) walk along maintained bush trails.A wooden swing bridge was constructed across the Mangapurua Stream in 1919. This connected the isolated valley with the riverboats that brought goods along the Whanganui River. However the settlers had always expected that roading access would be improved – a more solid bridge would be built and that it would form part of a road between Raetihi and Taranaki.