The Roe 8 construction zone has attracted protesters. Photo: Attila Csaszar

Tunnel costs lower than first forecast

The state government's estimate for the cost of a tunnel to complete Roe 9 has fallen dramatically since the option was first floated in 2014, according to documents obtained under freedom of information by Labor.

Former Labor planning and infrastructure minister Alannah MacTiernan released the documents publicly yesterday, after receiving them from Main Roads Western Australia earlier in the week.

It followed 18 months of court action and an order from the state’s information commissioner.


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