The Porirua Growth Strategy 2048, adopted by the Council in March 2019, identifies the big issues we’re facing and takes a principles-based approach to dealing with those issues. That strategy has guided the development of this programme, with a particular focus on supporting an active and connected city.
The PBC will be the Transport Implementation Plan for Porirua informed by the Growth Strategy. Once the PBC is finalized it will be used to inform the city’s District Plan and Long-term Plan (LTP).
The PBC has been developed in collaboration with the New Zealand Transport Agency (NZTA) and Greater Wellington Regional Council (GWRC). They are also key funding partners, since both are fundamentally concerned with the form and future operation of Porirua’s transport system, within the regional context.
The points below highlight the key stages of development of the PBC.
Context of change. Various changes taking place in Porirua, including the opening of Transmission Gully Motorway in 2020, current and planned growth in housing development in response to shortages, and growth in economic opportunities (industrial, commercial, recreational tourism). Further changes are predicted as the recent capital and operational investments in transport systems (rail, bus, roads, ticketing and fares) take effect.
Residential growth areas and expected household numbers in Porirua
Porirua has entered a unique period in the city’s history, with growth and change in transport, housing and commerce.
(1) The National Policy Statement on Urban Development Capacity (NPS-UDC), September 2019 directs local authorities to provide sufficient development capacity to meet the projected demand for housing and business growth. The Ministry for Environment (MfE) used StatsNZ 2016 projections to determine Porirua’s growth classification as ‘medium’.
Responding to growth and change. Porirua City Council is responding to the changes and growth that is taking place. The Growth Strategy will help shape and influence ‘why’ and ‘where’ the city will physically develop over the next 30 years and beyond. This PBC helps to develop one of the six key growth principles, namely, to have a connected and active city by enhancing how people move around the city and access opportunities. The Council is currently reviewing its District Plan so that it can continue to meet its obligations under the Resource Management Act 1991 (RMA)
Spatial framework from the Growth Strategy, showing a possible 30-year growth horizon
The PBC has been developed to align with recent growth strategies and plans, including the Growth Strategy (2048) and the draft District Plan (currently being reviewed).This approach has produced a possible future spatial framework for the city, although it is recognised that there are constraints that may inhibit this framework being realised within the 30-year timeframe.
Within the existing urban area, the Growth Strategy has a strong focus on compact, more intensive housing development centered around public transport hubs and established urban centres. It therefore promotes more efficient use of already developed urban land, which is also a key factor in creating more affordable housing. It also promotes investment in multi-modal transport options to support higher residential densities and reduce reliance on private vehicles.The PBC has been developed with these principles and intentions as a key success factor, underpinning the development of a connected and active city.
Strategy and planning. A sequencing plan has been developed to assist with sustainable development and timing uncertainties. This guides the conversation about allocating resources and managing the effects of development.
Projected growth sequencing for Porirua over 30 years
We have developed a growth sequencing plan to assist with sustainable growth including uncertainties of exactly when developments will occur and what their impacts will be. This will help to guide conversations about allocating resources at the appropriate time and managing the transport and environmental effects of development.
Some developments are more certain than others, for example, TG opening is 100% certain whilst growth in dwelling numbers and their completion dates naturally become less certain the further ahead we look. However, in the very short term (to 2023), up to 1,650 household units will become available in Kenepuru, Whitby, Aotea, eastern Porirua Development and Plimmerton Farms. Over the medium term (until 2033) there is an estimated additional 5500 new dwellings becoming available in Plimmerton Farms, Gray Farms, Pukerua Bay and eastern Porirua.
The modelled effects (3) of various residential growth scenarios as well as the effect of Transmission Gully on Porirua’s roading network clearly indicate that any relief in traffic resulting from TG is short-term and will be taken up with additional trips associated with new development. This provides Porirua with an opportunity to take advantage of these changes by considering how the current State Highway One and Fifty Eight can best serve Porirua residents, by improving the livability of its streets, towns and communities and by reconfiguring the network to be more connected, sustainable and active.
(3) The PBC utilised the existing North Wellington Saturn transport Model (NWSM) to forecast the effects of various growth scenarios, up to the year 2041.
Investment objectives. The Council recognizes that growth creates challenges and opportunities. The specific challenges (problems) and opportunities (benefits) relating to transport have been assessed and captured as a suite of Investment Objectives.
identified problems and benefits coming from intervention and investment
The current and forecast changes and growth will create specific challenges and opportunities relating to transport, and there is merit in considering investments which address them. In terms of road safety, Porirua local roads are quite safe, ranking 68th out of 70 districts in New Zealand for severity of risk for all deaths and serious casualties.
However, the transport networks will need to change to support the population and geographic growth in the city. This is highlighted by the challenges and problems as follows:
Preferred strategic response. We want to develop an active and connected city focussing on providing better access to key destinations for employment, housing and economic growth areas in the city, and transport connections such as rail stations. It also aims to support housing growth areas and economic growth.
network for Porirua, showing some of the key destinations and transport
The preferred response, to deliver on the investment objectives, is to develop an active and connected city as supported in the Growth Strategy. This focusses on providing better access to key destinations such as employment areas in the City, and transport connections such as rail stations. It also aims to support proposed housing growth areas and economic growth.
A fundamental requirement of this outcome will be the reconfiguration of sections of SH1 and SH58 (following opening of Transmission Gully), to align with the network requirements and community expectations.
In terms of the approach taken to identify the preferred programme, a range of proposed projects were identified and developed which address the investment objectives and which respond to the varied influences facing Porirua.
An initial long list of eight programmes was developed which respond to the investment objectives identified. These eight programmes are:
Through the assessment process, the programme which best supports urban intensification was identified as the preferred option. It seeks to:
This focus means it has a large geographical effect across the city and includes transportation projects that seek to:
Whilst the preferred programme is broad across the entire city and covers several projects, it also addresses long-term issues (up to 2048). The initial priorities over the coming 3 years will likely focus on:
Preferred programme of investment opportunities. This covers a range of possible future investments across the city, using a variety of transport options including cars, buses, rail, walking and cycling as well as the more recent “micro-mobility” options such as e-scooters.
of investment opportunities in Porirua
The candidate projects within the preferred programme are illustrated below.
These are effectively the investment opportunities which the funding partners could consider, in order to address the current and future challenges within Porirua.
The way forward. For effective implementation, the funding partners must align their investment priorities and support this programme through the allocation of resources. This will be addressed and confirmed through the preparation of the Long-term Plan, and subsequent regional and national Land Transport Programmes.
investment costs and benefits
Key Dates: The following timeline is planned for the PBC:
Overall responsibility for delivery of the programme will rest with Porirua City Council. However, the integrated nature of the programme, in terms of public transport aspects (GWRC) and the aspects relating to local road/state highway integration including Transmission Gully (NZTA), means that the accountability does not rest solely with PCC.
The Transport Agency and GWRC are key funding partners, and both are also fundamentally concerned with the operation of a sustainable transport system for Porirua, within the regional context.
Therefore, for effective implementation the funding partners must align on the local and regional investment priorities and support the programme through allocation of resources. This will be addressed and confirmed through the preparation of the Long-term Plan, and subsequent regional and National Land Transport Programmes.
Investment can be split broadly into three main categories: Infrastructure, Public Transport, and Active, with investment coming from NZTA, GWRC, and Porirua City Council. Some additional funding will inevitably come from HLC (4) as part of the eastern Porirua Development.
Infrastructure relates to local roading and state highways, including improvements to known and potential hot spots. Public transport investment looks at improving access to buses and trains, while Active investment aims to make cycling and walking around the city more attractive.Cost estimates for a Business Case which addresses SH revocation and local road reconfiguration are included, however specific investments relating to physical works are not known at this stage and therefore not included.
(4) Homes Land Communities (HLC) is a subsidiary of Housing New Zealand and responsible for managing the project in eastern Porirua.
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