networkn:Original cost was supposed to be $800M and I believe we are past the 3.5B mark now.
Some of that is due to cost blowouts but a good chunk of it is also due to the way the process is run: The bidders submit unreasonably low bids on the assumption that once they've got their foot in the door they can scale them up to more realistic levels, and the politicians lowball the costs to sell it to the electorate. It pretty much guarantees cost overruns right from the start.