California CodesSHC CodeDivision 1 - STATE HIGHWAYSChapter 2 - The State Highway SystemArticle 3 - The State Highway Routes§ 521§ 521Amended by Stats. 1990, Ch. 1187, Sec. 15.Route 221 is from Route 29 near Soscol Road to Route 121 at Imola Avenue in Napa.Cite this sectionCal. Sts. & High. Code § 521 (2026)Copyhttps://ca.codecond.com/codes/shc/division-1-state-highways/chapter-2-the-state-highway-system/article-3-the-state-highway-routes/section-521CopyOther sections in Article 3 - The State Highway Routes§ 300§ 301§ 301.1§ 301.3§ 301.4§ 301.5§ 302§ 303§ 304§ 305…§ 620§ 621§ 622§ 622.1§ 622.3§ 623§ 624§ 625§ 632§ 635← § 520§ 522 →