Route 57 is from:
(a) Route 1 near Huntington Beach to Route 22 near Santa Ana.
(b) Route 5 near Santa Ana to Route 210 near San Dimas.
Cal. Sts. & High. Code § 357
The State Highway Routes
Amended by Stats. 1998, Ch. 221, Sec. 5
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.