Malaysian developer <a href="https://www.apartments.com.au/developers/s-p-setia">SP Setia</a> is the latest to jump into St Leonards booming Transport Oriented Development precinct.

The developer, which has previously delivered Sapphire by the Gardens apartment development in Melbourne, identified the Atchison Street site in 2023. It filed a Scoping Report around 12 months ago, and now has revealed the designs for the new&nbsp;40-storey mixed-use tower.

The State Significant Development Application covers <a href="https://next-portal.urban.com.au/projects/14650/summary">20-22 Atchison Street</a>, a 1,374 sqm site positioned between St Leonards Station and the new Crows Nest Metro station.

Designed by <a href="https://www.apartments.com.au/architects/cox-architecture">COX Architecture</a>, the project would deliver 181 apartments, above a four-storey commercial podium, five basement levels, and new public domain works along Mitchell Street. The apartment mix comprises 35 one-bedroom apartments, 39 one-bedroom-plus-study apartments, 85 two-bedroom apartments, and 22 three-bedroom residences.

The proposal has been lodged as a shop-top housing development under the NSW Government’s TOD planning pathway, which allows increased density around key transport infrastructure. The site sits within the recently rezoned Crows Nest Accelerated TOD Precinct.

<img alt="First look: SP Setia targets St Leonards skyline with 40-storey TOD tower" data-entity-type="file" data-entity-uuid="b799673d-48e2-46b0-801a-0e33a9330100" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/atchinson%20site.png?VersionId=dPh0UfwfaHpbFL1R7H1cbZNbIW0CHbCC" />

SP Setia acquired the Atchison Street site as part of its continued expansion into the Australian apartment market. In comments made to City &amp; Country (The Edge Malaysia) in 2023, SP Setia President and CEO Datuk Choong Kai Wai described the acquisition as “a strategic move” aligned with the group’s post-pandemic market recovery strategy.

“Our target for this exceptional development is local and overseas buyers, including first-home buyers, downsizers and investors,” Choong said.

The tower has been designed as a slender vertical form rising from a mixed-use podium, with COX Architecture positioning the development as a response to the evolving St Leonards and Crows Nest skyline.

“The purpose of the project is to facilitate the delivery of high-quality housing at a strategically located site and deliver a built tower outcome that is consistent with the desired future character of St Leonards and aligns with the TOD controls,” the design report stated.

<img alt="First look: SP Setia targets St Leonards skyline with 40-storey TOD tower" data-entity-type="file" data-entity-uuid="b1a85eee-76f7-436c-a6da-73ba827b9b13" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/atchinson%20entry.png?VersionId=dA9jHGPMcm.dDbwk4QfxqWiY5bfh3UVt" />

The podium would incorporate retail uses fronting Atchison Street, commercial tenancies, landscaped communal areas, and pedestrian improvements along Mitchell Street. Vehicle access and loading would be consolidated via Atchison Lane.

Residents would have access to more than 665 sqm of communal indoor and outdoor spaces, while the development proposes 96 parking spaces across five basement levels.

The proposal also includes a commitment for 10 per cent of residential floor space to be allocated toward affordable housing through a monetary contribution.

COX said the tower form responds directly to the emerging high-density character of the precinct while seeking to maximise solar access, cross ventilation, and outlook from apartments.

<img alt="First look: SP Setia targets St Leonards skyline with 40-storey TOD tower" data-entity-type="file" data-entity-uuid="2163f85c-f63b-4be3-aafa-f8763976cec5" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/Article%20Feature%20Image%20%28Grid%29_5.png?VersionId=WiAmtIKJ6.ZQ41EtYEQ1fol7AeorKBlL" />

“The building is orientated towards north,” the Apartment Design Guide compliance report noted, adding that the tower’s slim form was driven by the constrained inner-urban site dimensions.

The design also incorporates landscaped setbacks and communal open space at podium level, intended to soften the interface with surrounding streets and improve pedestrian amenity.

The project adds to a growing wave of redevelopment proposals reshaping St Leonards and Crows Nest following the opening of the Sydney Metro City line and the NSW Government’s push for higher-density housing around major transport nodes.

Last week Stockland filed plans just down the road. They want to build a <a href="https://www.apartments.com.au/new-apartments/601-pacific-highway-st-leonards-nsw-2065">52-storey tower on Pacific Highway</a>.

Read more:&nbsp;<a href="https://www.apartments.com.au/news/nsw/first-look-stockland-plans-52-storey-538-apartment-st-leonards-tower">First look: Stockland plans 52-storey, 538-apartment St Leonards tower&nbsp;</a>

Joel Robinson

First look: SP Setia targets St Leonards skyline with 40-storey TOD tower

<a href="https://www.apartments.com.au/developers/urban-property-group">Urban Property Group</a> has revealed plans for a new mixed-use tower at 10 Dangar Street, Wickham, advancing a proposal that would reshape the southern gateway to Newcastle’s city centre with one of the city’s tallest residential buildings.

The State Significant Development proposal, now on exhibition, seeks approval for a <a href="https://www.apartments.com.au/new-apartments/bowline-10-dangar-street-wickham-nsw-2293">43-storey tower</a> immediately adjacent to the Newcastle Interchange. The project would deliver around 200 apartments, including 42 affordable housing dwellings, alongside 99 co-living units, a 171-room hotel, retail space, and new public domain integrated through the site.

The scheme marks a significant escalation of plans previously approved for the site. Urban Property Group took over the prominent 2,904 sqm parcel, where excavation and demolition had already commenced under an earlier consent for a 14-storey mixed-use development.

<img alt="First look: Urban Property Group unveils Newcastle’s next supertower at Wickham interchange" data-entity-type="file" data-entity-uuid="58a96dd9-407f-4d20-86b4-94e4bfeef74b" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/wickham%20podium.png?VersionId=LGlf08pdFGAZDzvx_CXC4XakHNZRuEE0" />

Designed by <a href="https://www.apartments.com.au/architects/sjb-architects">SJB</a>, the tower has been conceived as a landmark transit-oriented development anchored to the Newcastle Interchange precinct. The proposal includes 245 build-to-sell apartments across a mix of one, two, and three-bedroom residences, as well as two penthouses. Fifteen apartments and one operational unit are earmarked for NDIS housing. The co-living component would add a further 99 units, while the podium would accommodate retail uses and hotel facilities.

SJB said the site presents “a valuable opportunity to anchor the precinct by setting the standard for design, active ground planes and character at the key southern gateway.”

The architecture responds directly to the site’s position beside major transport infrastructure and within one of Newcastle’s fastest-evolving urban renewal precincts. The tower form sits above a sculpted podium designed to frame new public spaces, including a through-site pedestrian link connecting Station Street to Hannell Street, landscaped plazas, and activated retail edges.

<img alt="First look: Urban Property Group unveils Newcastle’s next supertower at Wickham interchange" data-entity-type="file" data-entity-uuid="a7bd6ff0-f7db-4ce8-a6dc-ea56e72c6149" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/wickham%20lanne.png?VersionId=xzf39VADyhj7zBQY2I9fx9vI62u2tuSb" />

The design report describes the project as part of the broader transition of Wickham into “a vibrant, high-quality mixed-use urban precinct” that leverages proximity to the station, open space, and regional connectivity.

A detailed public art strategy has also been prepared for the development. The strategy positions the project as “a transit-oriented development of state significance at the gateway to Newcastle’s city centre” and outlines a series of integrated artworks responding to Newcastle’s industrial and transport heritage.

Creative Road’s curatorial framework for the project, titled Unveil, draws on “stratified surfaces, carved volumes, and light-filled apertures” while referencing Newcastle’s transformation from an industrial city into a contemporary education and technology hub.

<img alt="First look: Urban Property Group unveils Newcastle’s next supertower at Wickham interchange" data-entity-type="file" data-entity-uuid="77a882bb-14b1-4d28-99ff-9438e39508c0" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/wickham%20site.png?VersionId=cevgo_vN0eKPK78P8YcEu3mKPLkpFqE7" />

The proposal is being advanced through the NSW Housing Delivery Authority pathway after being declared State Significant Development in June 2025. The accompanying scoping report states the development aims to “maximise the site’s proximity to the Newcastle Interchange by delivering transit-oriented development” while increasing housing supply and affordable housing provision within the Newcastle LGA.

Urban Property Group’s plans align with the long-term strategic vision established under the Wickham Master Plan, which identified the interchange precinct as suitable for substantial uplift in height and density. The current proposal would significantly intensify that vision, positioning the tower among the tallest developments proposed for Newcastle.

The site sits immediately north of the Newcastle Interchange, bounded by Dangar Street, Hannell Street, and Charles Street. It is surrounded by a rapidly growing cluster of residential towers and mixed-use projects that have emerged following the completion of the light rail and transport interchange.

First look: Urban Property Group unveils Newcastle’s latest tower at Wickham interchange

Bottega House has completed settlement of a landmark riverfront site in Macquarie Street, St Lucia, representing its first major Brisbane development.&nbsp;

Positioned on the banks of the Brisbane River, the <a href="https://www.apartments.com.au/new-apartments/180-macquarie-street-st-lucia-qld-4067">premium site at 180 Macquarie Street</a> features uninterrupted river frontage in one of Brisbane’s most tightly held residential precincts.&nbsp;

The proposed development, currently under assessment with Brisbane City Council, has been designed by <a href="https://www.apartments.com.au/architects/plus-studio">Plus Studio</a> with interiors by <a href="https://www.apartments.com.au/interior-designers/mim-design">Mim Design</a> and will deliver a boutique collection of premium residences positioned specifically for owner occupiers and downsizers.&nbsp;

The residences are set to redefine luxury apartment living in the area, with a focus on architectural quality, refined finishes, landscape integration and elevated amenities including curated wellness facilities, resort-style pools and recreation spaces rarely seen in the local market.&nbsp;

Exclusive sales for the project will be led by Keenan &amp; Byrne, ahead of an anticipated launch later this year.&nbsp;

Bottega House Managing Director Nick Malloch said the project reflects the group’s ambition to deliver a highly curated residential offering within one of Brisbane’s most tightly held precincts.&nbsp;

“This is an incredibly rare riverfront opportunity and one we have approached with a long-term perspective,” Malloch said.&nbsp;

“Our vision from the outset was to create a boutique collection of residences that feel more like private homes than traditional apartments, with generous proportions, refined finishes and exceptional amenity throughout."

Malloch says there is a&nbsp;lack of premium owner-occupier stock of this quality in the market, particularly for downsizers wanting space, privacy and a true lifestyle offering without compromise.&nbsp;

"Demand is expected to be strong given the scarcity of premium riverfront opportunities of this nature within Brisbane’s inner-west."&nbsp;

Bottega House secures landmark riverfront site in St Lucia 

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The arrival of the first piling rig officially marks the commencement of construction at SIERA’s new beachside apartment development, Exhale, in Northcliffe.

<a href="https://www.apartments.com.au/new-apartments/exhale-surfers-paradise-8-enderley-avenue-surfers-paradise-qld-4217">Exhale</a>, a glass-encased tower featuring 54 large-scale apartments at 8 Enderley Avenue, is SIERA’s third Gold Coast development. It follows the recently completed PIPIS Bilinga beachfront project, which achieved suburb-record prices, and the soon-to-be-completed Chevron Island development, Tapestry.

[smartcode_project:default project_id=112661 project_image_fid=359603]

<a href="https://www.apartments.com.au/developers/siera">SIERA</a> Founder and Managing Director Brent Thompson said the arrival of the piling rig represented a significant milestone for the development, which is scheduled for completion in late 2028.

Over the next month, around 260 piles are expected to be installed as work progresses on the basement structure. The building is anticipated to rise above ground level early next year, before unveiling its sculptural glass curtain wall, developed in collaboration with specialist façade engineers.

“The façade was designed to maximise panoramic coastal views while creating a distinctive architectural identity,” Thompson said.

[smartcode_project:default project_id=112661 project_image_fid=355935]

Designed by BDA Architecture, Exhale will comprise just 54 two- and three-bedroom residences across 26 levels, a level of low-density living rarely delivered in this beachside pocket between Surfers Paradise and Broadbeach.

The project has been conceived as a resident-only building, with no short-stay accommodation permitted. SIERA says the model is intended to appeal to long-term owner-occupiers rather than transient holiday demand.

[smartcode_project:default project_id=112661 project_image_fid=361052]

Residences have been designed with large-format layouts and expansive glazing, with most apartments featuring more than 30 metres of glass frontage to maximise natural light and ocean views.

The amenity offering spans two levels and centres on wellness and lifestyle, including a heated magnesium pool, sauna, yoga and Pilates studio, gymnasium, private dining facilities, cinema lounge, and dedicated surfcraft storage.

[smartcode_project:default project_id=112661 project_image_fid=359607]

More than half of the apartments have already sold. SIERA has also opened a sales gallery for Exhale at its Chevron Island commercial premises, near its Tapestry tower and the site of its second Chevron Island apartment development, which is slated to launch in early 2027.
</section>
</section>

[smartcode_project_cta:default project_id=112661]

SIERA kicks off construction at Northcliffe tower Exhale

Local Little Bay residents, along with buyers from premium postcodes across Sydney’s affluent Eastern Suburbs, have dominated purchases in developer-builder Urban Property Group’s first Eastern Suburbs apartment development, <a href="https://www.apartments.com.au/new-apartments/este-little-bay-jennifer-street-little-bay-nsw-2036">ESTE Little Bay</a>.

The $250 million coastal project, one of the first new developments in the area in several years, has proven particularly popular with downsizers, especially those from Coogee and Bondi. One Double Bay downsizer paid $4.7 million for a four-bedroom penthouse, setting a new local apartment price record in the process.

Buyers have been attracted to the combination of coastal tranquillity, premium design and amenity-rich neighbourhood living. The walkable village setting, along with proximity to three of Sydney’s leading golf courses, New South Wales Golf Club, St Michael’s Golf Club and The Coast Golf Club, has also been a key drawcard.

[smartcode_project:default project_id=112343 project_image_fid=352689]

Built across two low-rise buildings designed by <a href="https://www.apartments.com.au/architects/hill-thalis-architecture-urban-projects-pty-ltd">Hill Thalis</a> and set along a lush, landscaped green spine, designed by leading landscape architect <a href="https://www.apartments.com.au/landscape-architect/arcadia-landscape-architecture">Arcadia</a>, ESTE Little Bay offers a collection of one, two, three and four-bedroom residences with interiors by Richards Stanisich.

<a href="https://www.apartments.com.au/developers/urban-property-group">Urban Property Group</a> Sales Director, Tom McIvor said the response to ESTE has been "nothing short of extraordinary."

“Buyers have been quick to recognise ESTE as a rare opportunity to invest in a coastal sanctuary that offers both seclusion and connectivity to the heart of Sydney,” McIvor said.

[smartcode_project:default project_id=112343 project_image_fid=352687]

<a href="https://www.apartments.com.au/project-marketer/srm-residential">SRM Residential</a> Senior Director, <a href="https://www.apartments.com.au/project-marketer/srm-residential">Clayton Ross</a> said the local market has responded incredibly well, driven by ESTE’s exceptional location and the rarity it offers.

“We’ve seen strong interest from a variety of buyer groups, all of whom are drawn to the exclusivity and quality of the build and construction by the 4.5-star iCIRT-rated builder / developer, Urban Property Group. There’s truly nothing else like it along Sydney’s coastline.”

[smartcode_project:default project_id=112343 project_image_fid=352690]

The project also includes robust buyer protections, including Resilience Insurance’s Latent Defects Insurance, providing 10 years of structural cover, and an independent iCIRT-rating of the developer.

“The iCIRT-rating adds another layer of confidence,” Ross added. “Buyers see it as a safeguard for their investment and their lifestyle.” A highlight of ESTE’s offering is its exclusive wellness amenities, including a heated rooftop infinity pool and outdoor heated spa, a state-of-the-art Technogym fitness centre, and a sauna.

<a href="https://www.apartments.com.au/new-apartments/este-little-bay-jennifer-street-little-bay-nsw-2036">ESTE Little Bay</a> is topped out and is on track to complete towards the end of 2026, with residents moving in before Christmas.

[smartcode_project_cta:default project_id=112343]

Eastern Suburbs buyers snap up ESTE Little Bay apartments

West Gate Tunnel

<html><body>
GUEST OBSERVATION
Victoria’s government finds itself in a big hole with its West Gate Tunnel project.
As diggers lie idle in a dispute over what to do with contaminated soil, it’s facing long delays and billions in extra costs. But the government appears locked into a contentious project that was put to it as a market-led proposal, an arrangement that bedevils transport projects across Australia.
Australian governments look increasingly to <a href="http://www.projectmanagement.ie/blog/megaprojects-10-facts-you-should-know" target="_blank">mega-projects</a> to solve urban and regional transport problems. These projects are city-shaping. They can transform how entire urban regions function.
The public has a clear stake in these projects, but unsolicited market-led proposals are subverting planning processes that are meant to protect the public interest.
Market-led proposals are <a href="https://www.claytonutz.com/knowledge/2014/february/victoria-releases-new-unsolicited-proposal-guideline-for-projects-and-services" target="_blank">unsolicited bids</a> to government by private firms to provide public services or infrastructure. Policies governing market-led proposals were <a href="https://graduates.corrs.com.au/assets/thinking/downloads/whats-next-market-led-proposals-in-aus.pdf" target="_blank">introduced in 2014 and 2015</a> by state governments across Australia to promote innovation in service delivery and value for money for taxpayers.
The <a href="https://thelawreviews.co.uk/edition/the-public-private-partnership-law-review-edition-5/1189694/australia" target="_blank">increasing use</a> of <a href="https://www.dtf.vic.gov.au/infrastructure-investment/market-led-proposals" target="_blank">market-led proposals</a> for transport mega-projects raises important questions. How are policies governing these managed, to what end, and for whose benefit?
In Melbourne, the <a href="https://www.theage.com.au/politics/victoria/tunnel-trouble-dan-andrews-and-transurban-face-a-parting-of-the-ways-20200131-p53wjo" target="_blank">tensions</a> between toll road operator Transurban and the Victorian government over the West Gate Tunnel highlight a fundamental shortcoming of market-led proposals. Bluntly, these are not suited to the planning of transport mega-projects because governments can become “locked in” with <a href="https://theconversation.com/impending-traffic-chaos-beware-the-problematic-west-gate-tunnel-forecasts-79331" target="_blank">questionable benefits</a>. Lock-in has been <a href="https://journals.sagepub.com/doi/10.1068/b36017" target="_blank">defined</a> as “the escalating commitment of decision-makers to an ineffective course of action”.
The case of the West Gate Tunnel
Transurban’s builders of the West Gate Tunnel, John Holland and CPB Contractors, <a href="https://www.theage.com.au/national/victoria/more-than-100-west-gate-tunnel-workers-set-to-be-laid-off-20200113-p53r1a" target="_blank">laid off 137 workers</a> last month in a dispute about liability for contaminated soil. This is bad press for the state government, which touted <a href="http://westgatetunnelproject.vic.gov.au/about/faqs/west-gate-tunnel/what-job-opportunities-are-there" target="_blank">job creation and training</a> as key project benefits.
The dispute could add to delays and costs on top of two earlier changes related to the project. The first was a ten-year extension to Transurban’s <a href="https://en.wikipedia.org/wiki/CityLink" target="_blank">CityLink tolling concession</a> that will cost road users <a href="https://www.propertyobserver.com.au/https://www.abc.net.au/news/2019-03-19/cost-to-motorists-of-westgate-tunnel-deal-revealed/10915998" target="_blank">billions of dollars</a>. The second was an increase in construction costs from <a href="https://www.propertyobserver.com.au/https://www.abc.net.au/news/2017-12-12/melbournes-west-gate-tunnel-project-cost-blows-out/9248994" target="_blank">A$5.5 billion to A$6.7 billion</a> to extend tunnels to <a href="https://www.theage.com.au/national/victoria/western-distributor-longer-tunnel-chosen-for-second-river-crossing-project-20160709-gq24uf" target="_blank">save a public park</a>.
Explanations for the dispute include the Environmental Protection Authority <a href="https://www.theage.com.au/national/victoria/west-gate-tunnel-builders-threaten-to-tear-up-contract-over-soil-contamination-20200129-p53vo2" target="_blank">tightening soil disposal requirements</a>, <a href="https://www.theage.com.au/national/victoria/west-gate-tunnel-in-limbo-as-government-companies-argue-over-contaminated-soil-20200122-p53tnm" target="_blank">difficulties determining site conditions</a> during the environmental assessment process, and <a href="https://www.propertyobserver.com.au/https://www.abc.net.au/news/2020-01-29/west-gate-tunnel-builders-seek-to-terminate-contract-over-pfas/11909402" target="_blank">insufficient foresight and planning for these risks</a>.
Another explanation for what happened is “lock-in”. Evidence of lock-in on the West Gate Tunnel points to deeper systemic problems with market-led proposals for transport mega-projects in general.
How does lock-in happen?
Lock-in can occur when powerful corporations partner with governments in circumstances that enable them to exploit vulnerabilities in our public institutions. Some of these vulnerabilities include increasing reliance by governments on private finance, and the short period between elections compared to the time it takes to deliver bold public works programs.
Lock-in happens when the real decision to build a project is made well in advance of processes that are publicly declared to inform that decision. Once governments are locked in to a project, it can make alternatives appear increasingly unviable, if not unthinkable.
There is strong evidence to suggest this happened with the West Gate Tunnel. <a href="https://www.theage.com.au/national/victoria/melbourne-an-international-pariah-on-west-gate-tunnel-experts-warn-20171207-h00use" target="_blank">Significant concerns</a> were raised early on that the project might not provide its claimed public benefits.
What makes market-led proposals different?
Market-led proposals differ from government-led projects because planning is effectively outsourced to the private sector.
Market-led proposals also differ from <a href="https://www.investopedia.com/terms/p/public-private-partnerships.asp" target="_blank">public-private partnerships</a>, like Melbourne’s CityLink tollway. In such cases, government plans these projects, but private firms deliver and operate them. (At least CityLink was part of a <a href="https://theconversation.com/50-years-on-from-the-melbourne-transportation-plan-what-can-we-learn-from-its-legacy-127721" target="_blank">long-standing, if largely discredited, strategic plan</a>.)
Revelations that Transurban acted in <a href="https://www.theage.com.au/politics/victoria/tunnel-trouble-dan-andrews-and-transurban-face-a-parting-of-the-ways-20200131-p53wjo" target="_blank">secretive and strategic ways</a> to secure support for its West Gate Tunnel raise serious ethical questions. What does it mean to be a “good partner” to government? How should powerful private corporations obtain a “social licence” to operate?
These questions draw attention to problems inherent in Victoria’s opaque market-led proposal process. The government’s caution about the AirRail consortium’s <a href="https://theconversation.com/market-led-infrastructure-may-sound-good-but-not-if-it-short-changes-the-public-127603" target="_blank">unsolicited bid for Melbourne’s airport rail link</a> points toward some of these dangers.
What’s wrong with this approach?
Government policies for assessing market-led proposals give <a href="https://www.theage.com.au/national/victoria/transurban-the-making-of-a-monster-20160512-gotjm9" target="_blank">powerful private firms like Transurban</a> influence over strategic planning. This contrasts with the relatively limited influence granted to affected communities and stakeholder groups advocating for sustainable transport solutions.
Acceptance of Transurban’s bid allowed a multi-billion-dollar toll road to override plans that had been <a href="https://www.viclabor.com.au/wp-content/uploads/2014/05/Victorian-Labor-Platform-2014.pdf" target="_blank">taken to an election</a>. These plans were simpler and far less expensive. The plans had been developed with the local community to better manage freight traffic by <a href="https://www.viclabor.com.au/wp-content/uploads/2014/05/Victorian-Labor-Platform-2014.pdf" target="_blank">upgrading access to existing freeways</a>.
The West Gate Tunnel process involved expedited planning that bypassed broad-based community consultation. John Holland and CPB Contractors were selected in April 2017 “<a href="https://www.premier.vic.gov.au/only-the-best-for-the-west-with-6000-new-jobs/" target="_blank">to get to work</a>” on the project. That was five months before <a href="http://westgatetunnelproject.vic.gov.au/library/environment-effects-statement" target="_blank">public hearings</a> concluded in September. Over 500 submissions were received.
Add to this the suppression of <a href="https://www.theage.com.au/national/victoria/expert-cut-from-toll-road-project-after-warning-tim-pallas-it-did-not-stack-up-20170803-gxoohi" target="_blank">independent and critical oversight</a> and a <a href="https://www.theage.com.au/politics/victoria/voters-need-to-see-light-at-start-of-west-gate-tunnel-20180219-h0wawa" target="_blank">heavily redacted</a> business case, and a very concerning picture of Victoria’s market-led process emerges. 
Wanted: an integrated transport plan
Because governments are ultimately responsible for their partnerships, the Victorian government should demonstrate stronger accountability and leadership. Victorians are still waiting for an integrated transport plan, as is required to be prepared under the <a href="https://transport.vic.gov.au/about/legislation" target="_blank">2010 Transport Integration Act</a>. Instead of outsourcing transport problems to private firms, the government should develop a statewide, genuinely consultative, evidence-based plan.
An integrated transport plan would allow Victorians to see how future mega-projects, regardless of who proposes them, might serve everyone’s interests.<img src="https://counter.theconversation.com/content/131210/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;">
<a href="https://theconversation.com/profiles/james-whitten-954981" target="_blank">James Whitten</a>, Ph.D Candidate, Faculty of Architecture, Building and Planning, <a href="https://theconversation.com/institutions/university-of-melbourne-722" target="_blank">University of Melbourne</a>; <a href="https://theconversation.com/profiles/crystal-legacy-18412" target="_blank">Crystal Legacy</a>, Senior Lecturer in Urban Planning, <a href="https://theconversation.com/institutions/university-of-melbourne-722" target="_blank">University of Melbourne</a>, and <a href="https://theconversation.com/profiles/ian-woodcock-150260" target="_blank">Ian Woodcock</a>, Senior Lecturer, Director of Urban Design, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767" target="_blank">Swinburne University of Technology</a>
This article is republished from <a href="http://theconversation.com" target="_blank">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/west-gate-tunnel-saga-shows-risk-of-lock-in-on-mega-projects-pitched-by-business-131210" target="_blank">original article</a>.
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j.ballantyne1990-6AQqhLzZaK

Gate Tunnel saga shows risk of ‘lock-in’ on mega-projects pitched by business

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<img src="https://counter.theconversation.edu.au/content/79331/count.gif?distributor=republish-lightbox-advanced" alt="The Conversation" width="1" height="1">
GUEST OBSERVER
The recently released environmental effects statement and transportation impact assessment for the proposed West Gate Tunnel project in Melbourne’s western and inner suburbs have once again sparked debate about the future of mobility in Australian cities, and the ability of large road projects to provide it.
In the environmental effects statement, the assumptions behind the models on the need for the tunnel might paint a gloomier picture of the future than is warranted. Many are not inevitable and are, in fact, within the control of the state government and Melburnians.
Why we should be wary of the forecasts
The figures in the transport impact assessment are calculated using a traditional four-step model. 
Given the purpose to which the model has been put in this case, it is unsurprising that it predicts traffic chaos across metropolitan Melbourne in 2031. Also unsurprisingly, the modelling indicates that the West Gate Tunnel would ease this chaos. 
Comparing the “build” and “no-build” scenarios, both set in 2031, 28,000 fewer vehicles per day would use the congested West Gate Bridge if the tunnel is built. As it is designed to, the modelling presents a clear argument to build the tunnel.
There are numerous reasons to be suspicious of the modelled outcomes. For one, these models are notoriously unreliable. 
Research shows that half of road project forecasts are incorrect by more than plus or minus 20% after one year of operation. And for toll roads like the proposed West Gate Tunnel, the average observed error is 23% fewer vehicles using the road than forecast. 
Second, the extra 28,000 vehicles on the West Gate Bridge in the no-build case are not real cars; they are artefacts of the transport network assumptions. These assumptions feed into the models to create the build and no-build scenarios. 
The models predict a 48% increase in road traffic in 2031 and a 100% increase in public transport traffic. The transport impact assessment is relatively silent on the implications of this assumption about public transport patronage.
Cases built on pessimism bias
Studies indicate this 48% increase might be subject to “pessimism bias” – that is, a tendency to imagine the worst. A 2015 analysis found that in 70% of 35 transportation projects in Denmark and England actual travel demand did not reach the end-of-period forecast levels when the projects were not constructed.
Pessimism bias is a product of how the models understand historical road construction and traffic growth. It is likely present in the West Gate Tunnel proposal – but this cannot be measured as yet. 
The 2031 build and no-build cases both incorporate an extensive program of road network construction and expansion apart from the tunnel, which is standard practice. This includes 100 kilometres of additional motorway lanes in the CityLink and Western Ring Road widening projects. Both roads feed into the tunnel. 
VicRoads’ outer suburban arterial roads program includes an additional 700km of arterial roads, which feed into Melbourne’s greater road network. If these roads are not all built then the forecast will be incorrect.
Also, the annual traffic growth rates used in the models are primarily based on historical observation. From 1996 to 2016, traffic volumes across Melbourne grew by 2.6% annually. The model assumes this growth will continue. 
This period of growth includes the construction of the EastLink and Peninsula Link toll roads and several outer suburban arterial roads. Because the construction of roads promotes new traffic, these programs partly explain the growth from 1996 to 2016. 
Consider the alternatives
The “need” for the tunnel exists only because of the presence of extra road and motorway capacity in the modelling assumptions – and because of the absence of any estimates of the effect on car travel of improved public transport passenger and freight transport alternatives in Melbourne’s rapidly expanding western suburbs.
The package of roads that will generate traffic growth on the West Gate Bridge and in the proposed tunnel have not yet been built, and there is nothing inevitable about any of it. Melbourne’s East-West Link and Perth’s Roe 8 both demonstrate that public resistance is not necessarily futile. 
The government and Melburnians have a choice about how we build our cities. We can perpetuate the “need” for roads by continuing to build banal infrastructure, such as large suburban arterials or excessive car parking. This would create the conditions for roads like the West Gate Tunnel – or we could insist on something better.
<a href="https://theconversation.com/profiles/nathan-pittman-382813" target="_blank">Nathan Pittman</a> is PhD Candidate in Transportation Planning, University of Melbourne.
<a href="https://theconversation.com/profiles/john-stone-226753" target="_blank">John Stone</a> is Senior Lecturer in Transport Planning, University of Melbourne.
<a href="https://theconversation.com/profiles/sophie-sturup-383657" target="_blank">Sophie Sturup</a> is Lecturer in Urban Planning and Design, Xi'an Jiaotong Liverpool University.
All are authors for <a href="https://theconversation.com/au" target="_blank">The Conversation</a>.
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