Cal. Pub. Util. Code § 7557

Where any railroad or street railroad tracks are located on property that a public entity is authorized to acquire by eminent domain for road, highway, boulevard, street, or alley purposes or on property that a city, county, or municipal water district is authorized to acquire by eminent domain for the right-of-way of a public utility that it will construct, complete, and maintain, the plaintiff may require the relocation or removal of such tracks by exercise of the power of eminent domain. In such case, the complaint shall contain a description and map of the location and proposed location of such tracks.