To get between Melville Pde and the freeway bike path, the southern end of this detour direct riders to cross the footbridge at Cale St. This is a narrow bridge with significant pedestrian traffic. Please be courteous and be careful to give way to pedestrians on this and any other bridges, footpaths and dual use paths.
An alternative is to cross the freeway at Canning Bridge Station. There are still pedestrians, but the path is much wider.