Wynyard Crossing Bridge
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Wynyard Crossing Bridge Urban Design Assessment For Panuku Development Auckland Ltd McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 1 Contents 1 Introduction 1.1 Scope 1.2 Project description 1.3 Context overview 1.4 Planning framework 2 Connectivity, location and alignment 2.1 Context and proposal 2.2 Alignment 2.3 Geometry and relation to context 2.4 Temporary bridge 2.5 Conclusions 3 Bridge visual and aesthetic quality 3.1 Visual character of the setting 3.2 Visual and aesthetic design quality expectations 3.3 Conceptual quality 3.4 Integration of art initiatives 3.5 Detail and aesthetic effect 3.6 Bridge height 3.7 Night-time visual expression, and lighting design 3.8 Potential for glare from sunlight 3.9 Conclusions 4 Bridge function 4.1 Capacity and width 4.2 Carriageway function 4.3 Quality of components and elements 4.4 Quality of visual experience for bridge users 4.5 Bridge maintenance and serviceability 4.6 Conclusions 5 Public open space design 5.1 Context 5.2 Relation to spaces around 5.3 Suitability of ‘ramp’ gradient 5.4 Quality of components and elements 5.5 Conclusions 6 Unitary Plan Assessment 6.1 Scope 6.2 Conclusions 7 Conclusions APPENDIX 1: Unitary Plan Assessment A1.1 Assessment relative to Viaduct Harbour Precinct objectives and policies A1.2 Assessment relative to Wynyard Quarter Precinct objectives and policies A1.3 Assessment relative to Viaduct Harbour Precinct assessment criteria for a bridge across the Viaduct Harbour McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 2 1 Introduction 1.1 Scope This is an urban design assessment of the proposal relative to identified urban design issues and relevant parts of the Unitary Plan. The Wynyard Crossing Proposal is a restricted discretionary activity, and while the bridge and its Te Wero Island landing are in the Viaduct Harbour Precinct, its western end is in the Wynyard Quarter Precinct. Therefore the Unitary Plan policies and objectives for both precincts are considered. In addition to the Unitary Plan, assessment addresses design quality and resolution of design detail, relation to context, site and to the aspirations of relevant non-statutory documents. 1.2 Project description The Wynyard Crossing proposal is a double bascule bridge and related landside approaches, all as described in the Wynyard Crossing Design Statement (Final 10.06.2019 Concept Design). Wynyard Crossing is located within the ‘Waterfront Axis’, on the precise alignment of the North Wharf promenade extending eastward across to the heritage Viaduct lifting bridge. It links Karanga Plaza to Te Wero Island and replaces the existing Wynyard Crossing bridge which is also in this location and on this alignment. The proposed bridge is a 6 metre wide monocoque steel construction with triangular deck sections counterweighted by tall masts and is finished all in white. Approaches to the bridge are be a combination of accessible ramp and steps. The bridge and its approaches are shared surfaces, providing for pedestrians and people on cycles and scooters with a 1.4 metre high balustrade to provide safety from falling for cyclists as well as pedestrians. Relevant aspects of the project are described throughout the report in relation to each issue as it is discussed, and vignette images are included there to illustrate the matter being considered. McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 3 Figure 1.1 Plan configuration. (from Design Statement, page 14) Figure 1.2 View of the bridge open for marine traffic, looking eastward from Karanga Plaza towards Te Wero Island and the city behind. (from Design Statement, page 12) McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 4 1.3 Context overview Figure 1.3 Local context. (from Design Statement, page 4) The following overview of the attributes of context informs urban design assessment of the proposal. However detailed description of context relevant to matters being assessed is taken through into the body of this report. Key attributes of the Wynyard Crossing site and context are that it: • provides a critical public connection on the ‘Waterfront Axis’ that extends from Silo Park at the west to and including Quay Street to the west, and this axis is a key waterfront promenade for use by pedestrians and cyclists; • is located on a waterfront promenade that is a shared-surface pedestrian priority area; • links two important public open spaces and city precincts being Karanga Plaza and the Wynyard Quarter to Te Wero Island and the Viaduct precinct; • extends across sheltered inner-harbour water spaces that provides extensive berthage and marine activity with this activity being both a defining local characteristic and a visitor attraction; • provides access to and between important public destinations within the immediate vicinity the waterfront promenade, Viaduct Events Centre, hospitality operations at the eastern part of the Viaduct Harbour and along North Wharf, and Silo Park as an important recreational and event space at the western end of the waterfront axis; and • is in an area of open water space meaning that the proposed bridge will be in view from around the Viaduct Harbour. AC36 • The area, and Outer Viaduct Harbour in particular is an important site for the forthcoming AC36 event, with Emirates Team New Zealand (ETNZ) already installed in the Viaduct Events Centre and launching to the east, and a second base on an extension to Hobson Wharf. Temporary buildings for hospitality and event support purposes are to be located on the to the east on Te Wero Island and the Eastern Viaduct reclamation, and a public promenade is maintained along the northern edge of these McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 5 areas on the alignment of the Wynyard Crossing. There will also other temporary hospitality related buildings on the Halsey Street Extension Wharf to the north. Should ETNZ lose the America’s Cup, all of these buildings (apart from the Viaduct Events Centre) are required to be removed within 6 months of that loss. 1.4 Planning Framework Overview Auckland Unitary Plan The objectives and policies of the Viaduct Harbour and Wynyard Quarter Precincts are both relevant as the proposal is partly within both of these precincts. There are also specific assessment criteria for a bridge linking Wynyard Quarter to Viaduct Harbour and these are also relevant. This Unitary Plan content is tabulated in Appendix 1 to this report along with assessment of the proposal. The America’s Cup Design Requirements The America’s Cup Wynyard Hobson Building , Yard and Public Open Space Design Requirements (Final Agreed version 27 August 2018) as approved and confirmed by Environment Court decision1 are relevant because the steps at the Halsey Wharf connection are connected to and just overlap with the area of Halsey Wharf public realm covered by these Requirements2. These provide specific guidance on the expected design quality within that small component of the open space, however at the same time outline the quality of design that is anticipated for elements and structures associated with AC36 on this part of the waterfront. Overarching design principle for design coherence (Design Requirements, page 2): 1.3 Public open space design is to embody an overarching design idea or concept; relate sensitively to its specific context, including buildings, yards and other public open spaces; and demonstrate design coordination and integration so as to avoid the outcome being a piecemeal assemblage of unrelated design responses. A relevant generic design requirement for ‘Public open spaces in general’ (Design Requirements page 9) is: 4.1 Provide a unifying concept for the design of the areas shown in Figure 4. Each area shall: a. be based on an idea that relates to the wider context of existing wharf and public space composition, design and treatments; b. apply a consistent and aesthetically coherent approach to surface treatments, details and finishes; c. accommodate the functions of the marine industry and events; and d. provide for the safe viewing of marine activities from public areas. 1 Decision No. [2018] NZEnvC 179 2 Described in Figure 4, page 9 of the Design Requirements McIndoe URBAN Wynyard Crossing Urban Design Assessment 13 June 2019 6 The Waterfront Plan (2012) The Waterfront Plan identifies the following non-statutory high-level expectations for the waterfront: The Waterfront Vision A world-class destination that excites the senses and celebrates our sea-loving Pacific culture and maritime history. It supports commercially successful and innovative businesses and is a place for all people, an area rich and character and activities that link the people to the city and the sea. The Waterfront Plan identifies five ‘waterfront goals’ to achieve this vision, and the two most relevant to the Wynyard Crossing project are: A public waterfront A place for all Aucklanders and visitors to Auckland, a destination that is recognised for its outstanding design and architecture, natural environmental quality, public spaces, recreational opportunities, facilities and events; a place where we protect and express our cultural heritage and history, and celebrate our great achievements as a city and nation. (page 22) In relation to delivering a public waterfront, the Waterfront Plan identifies the importance of high-quality urban design and architecture: The importance of demanding good design in all development and creating a stunning city centre and enduring neighbourhoods