. When ANY Party, Groups or Individuals do good things I applaud it..Cost blowouts with tunnels are because of the unpredictable and specialised nature of the operation.. Sydney Harbour bridge The Opera House and various tunnel projects and roads in Sydney have similar problems They have ongoing water supply and sewerage issues. as well as COST of living there with inner city Property rebuilding costs Sydney has one of the worlds finest Harbours but I don't see how I could afford to live there I DID Teach and LIVE there once but in the Western Suburbs and never owned property. On a few occasions My only Transport was a Motorbike. and I was as poor as a Church mouse. Not helped by flying clapped out Austers etc from Bankstown to finish off my Commercial. .Nev