So despite climate change, Australia's federal government has just committed an extra $3.25 billion into building a toll road and a 20-lane freeway widening.
"Pouring an extra $3.25 billion worth of federal funds into Melbourne’s North East Link is a good use of taxpayer money, Prime Minister Anthony Albanese has insisted, despite the project’s cost doubling just a few months ago.
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"The North East Link – which includes 6½ kilometres of tunnels – will stretch from Bulleen to Greensborough. It will widen the Eastern Freeway by up to 20 lanes.
"Allan revealed in December that the 10-kilometre toll road had more than doubled in cost since it was first announced.
"The toll road was initially budgeted at $10 billion and reassessed in 2019 at $15 billion. But the government revealed last year that the updated cost estimate was $26 billion."
So the RTA's own modelling showed the Rozelle Interchange would be a traffic disaster—but generating more toll road trips for Transurban was more important.
"The [NSW Roads and Traffic Authority] finalised the first business case for the WestConnex tunnel project in June 2013, with the help of road designers from around the world.
"[Paul Forward, a former CEO of the RTA] said the initial concept did not include the Rozelle Interchange.
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"In 2014, an expert review group was formed to assess these plans.
"Mr Forward said it was at this point that TfNSW bureaucrats began to question the connectivity provided by the design.
"The RTA's former director of traffic Chris Ford told the inquiry that 15 alternative designs were modelled.
"Mr Ford said the modelling found that another motorway leading to the Anzac Bridge would cause congestion.
"'The issues that we see today were very clearly established in the modelling in 2014,' he said.
"In November 2015, after Mr Forward and Mr Ford were dismissed, TfNSW updated the WestConnex business case to include the tunnel to the Anzac Bridge, despite the congestion concerns raised by the modelling.
"In 2016, Transport for NSW updated the business case a second time ... creating a tunnel linking the Iron Cove Bridge to the Anzac Bridge."
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"In 2018, the NSW government sold its 51 per cent stake in the Sydney Motorway Corporation, the body responsible for operating WestConnex, to Transurban for $9 billion.
"Mr Forward said the final design would generate a larger number of toll trips than previous options."
"It's going to be a bloody disaster": Tell me again about how the second road tunnel under Sydney Harbour won't make congestion worse?
"Civil engineer Les Wielinga, a former CEO at the now-defunct Roads and Traffic Authority (RTA), made the fiery comments at a NSW parliamentary inquiry into the bungled Rozelle Interchange.
"The Western Harbour Tunnel, which is under construction, will allow drivers travelling between the inner west and the North Shore to bypass the CBD.
"Entries and exits to the tunnel will lie at the Ernest Street interchange in Cammeray and near the Falcon Street interchange at North Sydney.
"'It's going to be a bloody disaster,' Mr Wielinga told the upper house committee on Friday.
"Paul Forward, another former CEO of the RTA, told the inquiry he was concerned about the project's design.
"'You've now got three motorways coming out into this short area, and whilst I would recognise there are some exit points, some off-ramps, those motorways are now all going into the Lane Cove Tunnel,' he said.
"'A large number of lanes are going into two lanes at the Lane Cove Tunnel. Sounds familiar?'"
So WestConnex was totally going to solve traffic in Sydney by adding more lanes for cars. Just a few teething problems on the Rozelle Interchange and it'll all clear up, they said.
I wonder how it's going?
"Gladesville and Drummoyne locals say gridlock is worsening in their suburbs following changes to improve traffic flow through the notorious Rozelle Interchange, with drivers using local streets as “rat runs” to dodge congestion."