IMHO, this is where the terms highway and freeway shouldn't be 100% interchangeable.
At least in the East Coast, the term freeway was usually used/applied for highways that had NO tolls. If you told a layman that the PA Turnpike was a freeway, they would look at you like you were nuts. "How can a toll road be a freeway?" would be an often-asked question.
That segment of the PA Turnpike; while being dubbed as the first super-highway to open, it was and is a TOLL ROAD. It NEVER was nor will be a free highway.
Even if CA 110 was built after the above-PA Turnpike (when was it actually built BTW?); being a FREE highway from the get-go could give that road the right to be the first Freeway in America... provided there wasn't another freeway that predates it around.