The State Government approved them.
Yes id be very interested in the cost of such a project.^^^ That would be significantly more than $1b I would think. Look at how close you are to the river, there are difficulties in tunnelling in such an area. Plus, love the viaducts
Stu
Time and time again, people suggest this as a project for Northbank, but time and time again, people forget the engineering issues involved with such a project. To create a tunnel between Southern Cross and Flinders St, the train would have to plummet at an alarming decline soon after Collins St to get under Flinders St. The train would then have a very steep incline after Queens Bridge, and by that time, the Banana Alley vaults would have to be demolished, and the platforms would have to be extended under Fed Sq and we may even have to lose the Elizabeth St subway. Its not as easy as you may think, let alone the issues of water!Well if they are spending $1 billion on Southbank, ive always wondered why they don't spend this sort of money on sinking the rail line between Spencer and Flinders st, changing the current Northbank from rail lines to park lands and open spaces?
Trains are part of a well functioning city; the viaduct is no worse than a car strewn street.Why tunnel, why not used the same technology we use building basements. Bored Piers and shotcrete. Put a lid over the top and and hey presto no elevated train line, lots of development opportunity, great access to the river from the North bank and an ugly scar removed from the aerial shots!. The problem now is that they have spent way too much money on Southern Cross Station and that would all have to become redundant. Game over, it's not going to happen this century any rate!