Route 24 is from:
(a) Route 580 in Oakland to Route 680 in Walnut Creek.
(b) Route 680 in Walnut Creek to Route 4 near Pittsburg.
Cal. Sts. & High. Code § 324
The State Highway Routes
Amended by Stats. 1990, Ch. 1187, Sec. 7.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.