On entering the bridge the helical structures provide a frame for the surrounding landscape, and yet define the interior as a different environment emphasising the importance of the river crossing as a dramatic transition and an exciting part of the greenway journey.
The walkway comprises of three sections, the central area providing the main spaces for animal and human traffic, and the two undulating side sections affording a dynamic viewing experience with elevated areas to enhance the potential for taking in the vistas, and widened areas over the vertical support on each bank which give the space for gathering and picnicking on the bridge. This surface is expressed as a 'morphed' timber deck, a sculptural timber ribbon within the helical structures.
The balustrade of moulded translucent glass reinforced plastic follows the undulating timber deck, accentuating its naturally inspired curves, and creating a cocoon-like membrane along the edge of the bridge platform. This gives shelter from the wind for those using the bridge to sit, and those enjoying the views of the landscape and nature from the viewing decks.
We propose to use the voids below the undulating seating as a habitat for nesting birds and insects with locked access hatches allowing cleaning and checking of the nesting areas from the walkway. Thus the bridge becomes not only a place for observing, and enjoying nature, but also a habitat which nurtures bird and insect life. Potential also exists for these zones to be used as storage of rainwater runoff from the bridge deck to provide irrigation for climbing plants and allow greening of the structure itself. This would enable vegetation to soften the edges of the structure overtime and encourage the use of the bridge by wildlife.