The SkyPath uses the leading marine technology composite material which is light and very strong in the form a series of U beams that clip onto the underside of the eastern edge of the bridge with a composite foam core deck. Horizontal composite rods are spaced out across the enclosure to allow viewing and maintaining safety.
Composites are slightly more expensive than a comparable steel structure, but make up for this in terms of build-ability, long-term service life, lower maintenance costs, and weight saving.
Being 4 metres wide, SkyPath has sufficient shared space for walkers, joggers and cyclists with additional 2 metre extensions for six observation decks at the structural piers.
SkyPath will be constructed in modules that have been prefabricated off-site and are placed on the side of the bridge at night to minimise traffic disruption.
SkyPath is planned for completion by the end of 2015/early 2016.