Yes, according to Japanese law there must be a "catwalk"; the type of thing that are on the lifthill along the whole length of the track.
I have no evidence to back this up, but in my eyes, the earthquakes that rock Japan are generally more intense than in California. OR if you find that hard to believe, then Japan has more frequent intense earthquakes than the West Coast.
Another reason is that Steel Dragon is a hypercoaster-like giga, therefor, it spends a LOT more time in the air then Millenium Force. Someone brought this point up a while ago on some other thread. Anyways, my point being Steel Dragon probably spent way more on support structure than Millennium Force because it has the initial 300+ foot hill, several hills that are over 200 feet high, the insane helix-type thing, and of course all of those return bunny hills. That is a lot of off the ground supports that need to be earthquake "proofed."
Sorry that that was really off topic. Just wanted to explore into some of the reasons why it was so expensive. And yes, I believe California must do something similar with their coasters as far as prepping them for earthquakes sanse the "catwalk" law.
-------------
A New World. A New Technology. One Last Hope for Salvation. Neon Genesis Evangelion
*** This post was edited by Coastercraver on 6/30/2001. ***