Canada Street bridge is a key element in Auckland’s new urban cycleway and will complete a cycling and pedestrian loop around the city.
The 85 meter long bridge will span over State Highway 1 - Auckland’s major arterial route - and will create a dramatic piece of urban infrastructure when it connects with and reuses an abandoned vehicle offramp.
The bridge is designed as a highly sculptural yet simple and elegant form – an orthotropic steel structure, which allows for a very thin deck with a sculpted column at mid span. The 4200mm metre wide deck (with 3000mm walking and cycling surface) has a triangular cross section with a maximum depth of 1500mm at the column location tapering to a minimum 750mm at each end of the cantilever.
The geometry of the bridge is complex with the tapering diamond shaped column having a coplanar relationship to double curvature monocoque skin of the deck. The bridge was designed and modeled in Rhinoceros as well as the parametric plug-in grasshopper. These tools enabled a very high degree of geometric manipulation and control as well as allowing the fabrication process to be streamlined moving forward.
The bridge will have a high gloss black finish to accentuate the sculptural quality of the bridge, reflect the movement of vehicles surrounding it and resonate with the urban environment its sits within.
AWARDS: 2015 WAF Finalist