Land acquired by a local agency for highway purposes through the expenditure of funds allocated pursuant to Chapter 3 (commencing with Section 2100) of Division 3 of the Streets and Highways Code may be retained by the local agency, or transferred to another local agency, for public park and recreational purposes if the land is no longer necessary for highway purposes, and if the local agency having jurisdiction over such land determines that the use of such land for public park and recreational purposes is the highest and best use of the land.
Ca. Gov. Code § 54231