Red arrows are the principle highway directions, green is the frontage avenue (i've also marked the direction of travel). There is another avenue in the direction of the blue arrow but that is near the coast which I want to reserve for zoning.

Question is how to best connect the 5 directions together. I started to make some connections but stopped because I can't really get a good layout that allows all directions of travel (if that is even possible in this space).

Ideally there would be only merges but if that's not possible happy to see what other options there could be.

Thanks in advance!