What are the major highways in California?

Question

i need them for my report

Answer 1

I-15, I-5, I-10, I-40, I-8, I-80

Answer 2

Well, there's the interstates:  I-5, I-8, I-10, I-15, I-40, and I-80.

Then there's the US Highways, the biggest of which are probably 50, 101, and 395.

That's probably enough, but there's dozens and dozens more covered in the source material.

Answer 3

have you tried looking at a MAP