How do I cross a highway with a railroad?

I'm playing SimCity 4 Deluxe (on Steam) and am trying to build a bridge (or something to the same effect) for a railroad to cross a ground highway. How can I achieve this?

Here a screenshot of my situation:

Solution 1:

The only way to do that is through the underground crossover exploit. You will never be able to achieve that in the normal way. Here is what I mean!!

As you can see if both the segments are underground there is an exploit/bug which allows such crossovers to exist.

Solution 2:

Highways can pass OVER roads, but roads my not naturally pass over highways. For the road to pass over the highway, the road will need to be built first.