Don't know if this is a NAM question but I'd ask it here anyway. Is it possible to add a Double Height El-Rail puzzle piece crossing El-Rail over Road? I know Ave system is FLEX based but thought I'd ask about it anyway.
I guess it's possible, but I don't see it happening. Both puzzle piece and the double height el-rail mods have no development plans right now.
If you convert the section to El-Rail over Ave for a brief stretch, you can then intersect the El-Rail directly though it. That might be a useful workaround.