I don't remember the exact number, but it's around 1500 blocks on the z axis and 1000 on the x. That's 2500 pieces of track at the minimum, it's a huge undertaking. If you're gonna do it, make sure you use physical boosters every now and then. The powered rails are nice, but are nowhere near the power of a good booster. Is the new track gonna be side by side with the other one? Cause that's what I would prefer.
I don't have mch iron left from building the railway, bt I'll help however I can.
Yes, they are side by side. Easier to keep both tracks lit, and have the start/end points be the same station that way.
Also, my torch rework of the railway is done at last. Now, every 7 blocks exactly there's at least 1 torch on the side of the railway: Though later on, when I finish adding the 'support' blocks on either side of the railway, there will be a pair of torches every 7 blocks, all the way to Aulis. The only time that this pattern breaks is when the track turns a rare corner: Then I immediately put down a pair of torches, and restart the 7 count from 1 again. Easier to keep things relatively evenly spaced that way... And the highway of glowing lights looks awesome at night. I've gone through at least 3 full stacks of torches... The thought of just how long this rail is is intimidating. And I've run it I know a good 4-5 times tonight.
On that note, I'm going to get some sleep. I'll continue work on the railway revamp tomorrow: I'm going to have to go gold hunting so that I can throw down some powered rails here and there.
EDIT: Oh. Ignore the 'failed' supports on either side of the rail near Aulis: I was hazarding guesses as to where the supports would end up in my count from the city. I was close in some places and so terribly, terribly wrong in others. Eventually I'll run back with my pick and remove them, placing them in their proper locations.