what is the width of one of the four pylons (towers) I know the height is 102.4 meter, but what is the width of the pylons? Thanks a lot!

If you use google earth you can use the measuring tools and measure the pylons. This is fairly accurate for most stuff. We used this quite often in architecture school for information like this. Hope it works for you!

I really don't know

I have no idea but you can check website