Read the documents the Barnett & Turnbull Governments fought so hard to keep from you about their Road to Nowhere!

See the scramble for data that could be used to provide some semblance of a planning process: see the caveats that the 2031 traffic projections might not be reached to 2051: see the federal officers sledge the tunnel option- and much more.
But also ask yourself this question – was it worth an estimated $250, 000 in legal fee and senior management time to keep this a secret. More waste and more evidence of their unfitness for modern government.
Download the full doc here.