A while ago @milkisklim@lemm.ee and I had a discussion on here about dual level rails. There was a problem with them that milkisklim eventually commented their solution to, but I didn’t want to go that route. I settled on a single level LHD network for a “skyway” but wanted to find a solution I liked for stacked lines to use for local networks.
It can still be difficult to tell from above which way is which with the railed version, and the trains will clip through the beams a little, but if it works well for me I have tweaks in mind before I use it too much.
Are your local loops meant to be disconnected from the rest of your rail network?
The water trains for iron will almost certainly be separate from the main. I’m picturing the rest being connected to the skyway and possibly each other. Maybe different systems for different areas just to add a little challenge to the junctions
I might need to start doing things like that. My global rail is getting congested. Although playing with the wait times has helped a great deal.