Redding is in the “local area” of CSU Chico, even though CSU Chico is something like 70+ miles away. Humboldt State (or “Cal Poly Humboldt” that it wants to be) and a theoretical CSU or UC in Yreka would be further from Redding than CSU Chico.
Serving Redding better with a local four year school would mean putting one in Redding or adjacent to it.