And you're placing the interchanges on completely leveled ground? As in: the exact same height on the entire area that the 'blueprint' covers?

I tried this asset on another map and it worked fine, but the spiral interchange (the above-ground mini turbine) was having this same issue. I think it must be related to strict terrain height restrictions? (I use almost zero mods.)

Maybe a mod you use causes problems. I never had this problem myself but I've created quite a lot of assets, so more people could experience this issue. Please let me know if you find out what causes this. I'm curious!

Yeah first I had already levelled the terrain with the tool (playing on a pretty flat island map anyway), but then I even just tried to place the intersection "floating" over water and the same thing occurred. I ended up having to manually recreate the intersection in larger fashion myself. What's odd is that I didn't see the "disconnection" issue when I opened the asset up in the editor.

Hi Wilky, I tested without any mods active, and didn't experience any problems. Did you place the interchange on leveled ground? Interchange-assets can sometimes get messed up when placed on ground with different heights. I therefore recommend to always level the ground where you place any interchange asset.

I tried this one in-game but it did not work. When placed on a map, it collapses on itself / becomes disconnected. Maybe it requires Fine Road Anarchy to use.