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Airport rail study was doctored to ensure Sunshine ‘won’ shortlist of routes, commission told

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Cite

Grand, C. L. (2026, November 1). Airport rail study was doctored to ensure Sunshine ‘won’ shortlist of routes, commission told. The Sydney Morning Herald. https://www.smh.com.au/politics/victoria/airport-rail-study-was-doctored-to-ensure-sunshine-won-shortlist-of-routes-commission-told-20261102-p619gg.html?ref=rss&utm_medium=rss&utm_source=rss_feed

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The Sydney Morning Herald · collected 2026-11-01 · by Chip Le Grand

Quick Summary

A confidential submission to the Big Build royal commission alleges that financial estimates were manipulated and a senior public servant was threatened with dismissal to ensure the proposed Melbourne Airport Rail Link would pass through Sunshine rather than a more direct route. This manipulation included inflating the cost of an alternative Maribyrnong route by exaggerating tunnelling requirements, despite earlier studies ranking it as superior. The submission challenges the integrity of the $12 billion joint state and federal funding commitment for the project, contributing to ongoing scandals before the upcoming state election.
Written by AI on 2026-11-01, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

In late 2017 or early 2018, a confidential working group allegedly doctored financial estimates and manipulated evidence to ensure that the proposed Melbourne Airport Rail Link (MARL) would go through Sunshine rather than a more direct route. This revelation was made at the Big Build royal commission and challenges the integrity of Premier Ben Carroll’s priority project. The scandal could affect a $12 billion joint funding commitment by both state and federal governments, intensifying controversy around the project just one month before the upcoming state election. A planning expert's confidential submission to the royal commission claims that public servants within the Transport Department and external consultants were instructed not to discuss their work with colleagues or document their meetings in writing. The aim was allegedly to support a politically favored outcome for Sunshine despite initial considerations of four shortlisted routes.

Written for “Airport Rail Study Controversy” on 2026-11-02, grounded in this article and the 0 other(s) covering the same event.
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The article's own words the score was based on. Each is quoted verbatim and was checked against the article text before being stored, so you can find it in the original.
Reading Leans strongly left (beta estimate) Confidence high 1 quote(s) discarded as not found in the article
Leaning: leans strongly left for article 121709 (high confidence, 2 verified quotes) · logged 2026-11-01

Story

📰 Airport Rail Study Controversy
Politics · 1 article(s) covering the same event.

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Claims extracted
71
sentences that state something as happening or true
Uncertain
7%
5 of 71 hedged ("reportedly", "may", "according to")
Leaning
Leans strongly left
of the writing, not the subject · beta estimate
Publisher signals
61/100
The Sydney Morning Herald's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Politics
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Publisher

The Sydney Morning Herald · 5766 article(s) · 15 correction(s) detected
Running correction rate · 15 correction(s)

Who wrote this

Chip Le Grand
10 article(s) here · 1 carrying a prediction
🔮 The group’s brief, according to the submission, was to study four shortlisted routes for the Melbourne Airport Rail Link (MARL) and build evidence supporting the state government’s politically favoured outcome – that the new train line, if ever built, would have to go through Sunshine.
🔮 The government will on Thursday announce that the Arden Central renewal project in North Melbourne will be reserved almost exclusively for first-home buyers, with 74 per cent (4000 of 5400) of the planned new dwellings to be set aside for people trying to enter the market.
🔮 According to Victoria’s Parliamentary Budget Office, dismantling the entire statutory framework associated with treaty would save the state’s budget $247.8 million over the four years of the next government.
🔮 While these numbers, if replicated on November 28, would almost certainly deliver a change of government, it is less clear whether the Coalition would be able to form a majority government without the help of One Nation or another minor party.
🔮 Under Wilson’s SurgerySooner pledge, a Coalition government would use public funds to pay for an additional 25,000 elective surgeries in private hospitals over the next four years at no cost to patients.
🔮 When Premier Ben Carroll was on Monday asked if he would accept the support of Greens MPs in parliament if it meant staying in power after November’s state election, he said he’d throw the keys back.
🔮 He declared it his personal mission to rebuild Australia’s relationship with its Jewish people so that no young Jew could doubt whether they belonged here.
🔮 Had they done so, Guy would have probably been less scornful in his appraisal of the need for a new train station at Keilor East when he was questioned about it, by this reporter, shortly after Labor’s announcement.
🔮 Victoria will finally have an anti-corruption watchdog with the authority and powers it needs to do its job after the parliament on its last sitting day before the state election agreed to the most substantial changes to IBAC since its inception.
🔮 Just as importantly, Commissioner Chris Kourakis has signalled his willingness to stand back and interrogate some bigger, long-overdue questions about how we got here.
2026-09-23 · assertive framing · Royal commission hints at original sin of Big Build
Also by Chip Le Grand
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 10 articles by Chip Le Grand →

Topics

Big Build MARL Maribyrnong Sunshine the Big Build

Subjects

Maribyrnong GPE · 5× Sunshine GPE · 4× MARL ORG · 3× Allan PERSON · 1× Ben Carroll PERSON · 1× Big Build ORG · 1× Jacinta Allan PERSON · 1× Liberal NORP · 1× the Big Build ORG · 1× the Transport Department ORG · 1×

Narrative

Wilson has promised to expand the royal commission’s terms of reference so that it examines whether “any project was conceived, selected, prioritised, expanded, re-scoped, funded or continued, wholly or partly, to confer an industrial, financial, organisational or political benefit” to a trade union or political party.
framing: assertive · carried by 1 article(s) · first seen 2026-11-01
🔮 The group’s brief, according to the submission, was to study four shortlisted routes for the Melbourne Airport Rail Link (MARL) and build evidence supporting the state government’s politically favoured outcome – that the new train line, if ever built, would have to go through Sunshine.

Claims (71 extracted, 5 hedged)

Financial estimates were doctored and a senior public servant threatened with the sack to ensure the proposed Melbourne Airport Rail Link ran through Sunshine instead of a more direct route to the city, the Big Build royal commission has been told. asserted
commission → doctor → city
The allegations challenge the integrity of the business case for Premier Ben Carroll’s priority project, call into question a $12 billion joint funding commitment by the state and federal governments, and plunge the Big Build into fresh scandal a month before the state election. asserted
allegations → challenge → election
A confidential submission to the royal commission by a planning expert who advised on the airport rail link reveals that a secret working group was established in late 2017 or early 2018 at the direction of then-public transport minister Jacinta Allan to allegedly bake in the case for the Sunshine route. uncertain
group → advise → route
It says the small group, which included public servants within the Transport Department and outside consultants, was told to not discuss its work with any of their colleagues, including direct reports, or diarise their meetings. asserted
which → say → meetings
All instructions were given verbally. asserted
instructions → give → ?
The group’s brief, according to the submission, was to study four shortlisted routes for the Melbourne Airport Rail Link (MARL) and build evidence supporting the state government’s politically favoured outcome – that the new train line, if ever built, would have to go through Sunshine. uncertain
line → accord → Sunshine
“The task was to produce a document, or set of documents, prior to the 2018 election so that after that election there would be no further consideration of any alternative routes for the MARL other than through Sunshine,” the submission reads. asserted
submission → produce → Sunshine
Allan denies the allegations and is expected to be called as a witness before the commission. asserted
Allan → deny → commission
The submission is one of four to the royal commission raising concerns about the integrity of the current MARL project. asserted
submission → raise → project
All were provided to this masthead by their respective authors. asserted
All → provide → authors
The most serious allegation raised by the planning expert is that, to make an iron-clad case for Sunshine, the estimated cost of a more direct route through Maribyrnong was intentionally inflated by exaggerating the amount of tunnelling required. asserted
cost → raise → tunnelling
The Maribyrnong route would have run beneath Highpoint shopping centre and opened up disused defence land for residential development. asserted
route → run → development
An earlier 2012 study, commissioned by the then Liberal state government, top-scored Maribyrnong, known at the time as the “direct tunnel” option, out of 22 possible routes, with Sunshine ranked a close second. asserted
Sunshine → commission → routes
The allegation that costings were deliberately inflated to rule Maribyrnong out of contention is contained in a separate, contemporaneous file note made by a solicitor when the planning expert first sought legal advice about blowing the whistle. asserted
expert → inflate → whistle
The note, dated August 23, 2018, and seen by The Age, reads: “Untenable. asserted
note → date → Age
Serious matters ignored, not acted upon. asserted
matters → ignore → ?
“4 options – one particular route better but more expensive (doctored to make it unviable).” asserted
it → doctor → ?
The solicitor who wrote the file note confirmed its authenticity. asserted
who → write → authenticity
The planning expert, who spoke to this masthead on the condition of anonymity, decided against making a disclosure to the Victorian Ombudsman or IBAC due to fears of personal and professional recriminations. asserted
who → speak → recriminations
They subsequently quit the department, leaving the information buried for eight years. asserted
They → quit → years
“This is fraud on a billion-dollar scale,” they said. asserted
they → say → scale
The planning expert, working with trusted former colleagues experienced in rail engineering and major project costing, has calculated that an unnecessary 3.5 kilometres of tunnelling was included along the proposed Maribyrnong route to add between $3.8 billion and $4.6 billion to the estimated cost. asserted
kilometres → work → cost
A price tag of $20 billion to $25 billion for Maribyrnong – double the estimated $8 billion to $13 billion cost of the Sunshine route – was included in a strategic appraisal of the airport rail link published by Transport for Victoria in July 2018 and built into the 2021 business case for the project. asserted
tag → estimate → project
A truer, average cost estimate of the Maribyrnong route, according to detailed calculations provided to this masthead by the group of experts, is $16.5 billion in 2018 dollars. uncertain
estimate → accord → dollars
Maribyrnong was the federal government’s preferred route when then-prime minister Malcolm Turnbull came to Melbourne in April 2018 to announce $5 billion in funding towards the project. asserted
Turnbull → prefer → project
Then-premier Daniel Andrews, who did not appear at the funding announcement alongside Turnbull, was blindsided by the move. asserted
who → appear → move
At the time, he was more focused on his government’s plans to unveil the Suburban Rail Loop, a project being developed in secret, as a vote-grabbing election promise. asserted
he → unveil → promise
The Victorian government formally endorsed the Sunshine route for the airport rail link in August 2018 and the federal government followed suit three months later. asserted
government → endorse → August
The comparative cost of the Maribyrnong route was a critical factor in tipping the scales towards Sunshine in the published assessment. asserted
cost → tip → assessment
According to the Transport for Victoria analysis, Maribyrnong was the top-scoring route for the benefits it would bring to travellers using the line, Victorian businesses and the economic development of Melbourne’s inner north-west. uncertain
it → accord → west
Due to its prohibitive cost, it was ranked last for deliverability. asserted
it → rank → deliverability
When the planning expert saw the assessment, he challenged an executive working in the department. asserted
he → see → department
“I just said to him, “How could you produce documents like this, and think this is OK?” the planning expert told this masthead. uncertain
expert → say → masthead
“He said to me, ‘The minister said to me that either these documents say Sunshine or I’ll sack you. asserted
I → say → you
So they say Sunshine.’” asserted
they → say → Sunshine
Allan, who is retiring from politics after losing the Labor leadership to Carroll in July this year, was the minister for public transport and major projects at the time the assessment was done. asserted
assessment → retire → time
“The allegations made are incorrect,” a spokesman for the former premier said. asserted
spokesman → make → premier
“Ms Allan will co- asserted
Allan → co → ?
She will answer whatever questions the royal commission has for her about these allegations, but it is not appropriate to pre-empt the royal commission’s work.” asserted
it → answer → work
A colleague of Allan, who was unauthorised to publicly discuss the matter, said the former premier was furious at the suggestion she would coerce public servants to support a particular outcome. asserted
she → discuss → outcome
…and 31 more, not listed.
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