Limited access state highways are the same speed as interstate limited access highways ("freeways"). The feds dont give the states magic pixie dust when the sta

Limited access state highways are the same speed as interstate limited access highways ("freeways"). The feds dont give the states magic pixie dust when the states build and maintain the interstate freeways. In CA, my understanding that the most used parts of interstate freeways are actually state limited access routes (highways) extended to major national cities. This is in addition to the other state routes (expressways, etc.) and other county routes that permeate pretty much everywhere. Together, this state highway system (the county being an administrative instrument of state government) is by far more efficient than e.g. taking an interstate to a major national city (skipping even large regional cities) and then off-roading everywhere else. "Efficiency" is pretty loose term in this respect, no?