Sts. & Hy. Code, § 6780

Whenever any railroad track of any description exists upon any street which has been paved, macadamized, graveled, capped, or oiled either for the whole, or any portion of, the width of the roadway thereof along or near the line of the railroad track, and the roadbed thereof has not been improved similarly in all respects to and with the same materials as the street along the line of the track; or where any portion of the roadbed, whether so improved or not is out of repair or is not on the official grade of the street or has small hummocks or ridges or loose rock upon or along the roadbed or the materials composing the roadbed next to the rails of the track are not flush with the top of the rails or the sides thereof, the legislative body may, by resolution, require and order the person having or owning the railroad track to improve the roadbed thereof by making repairs or by bringing the roadbed to the official grade or removing the hummocks or ridges or loose rock upon or along the roadbed or making the roadbed and the materials thereof flush with the top or sides of the rails of the track.