Section 619 Of Article 3. The State Highway Routes From California Streets And Highways Code >> Division 1. >> Chapter 2. >> Article 3.

. Route 605 is from:
  (a) Route 1 near Seal Beach to Route 405.
  (b) Route 405 to Route 210 near Duarte. Route 605 shall be known and designated as the "San Gabriel River Freeway."