Cal. Sts. & Hy. Code § 855
Notice of such proposed change of grade shall be given by posting and publication of such resolution. Publication shall be made at least once a week for two consecutive weeks in a newspaper of general circulation published in the city in which the portion of State highway affected is located, or if there is no newspaper in such city, then in a newspaper of general circulation published in the county. If there is no newspaper in either the city or county, notice by posting is sufficient. Notice by posting shall be given by posting copies of the resolution, indicating thereon the date of the first publication thereof, if any, in conspicuous places along the portion of the highway affected at intervals of not to exceed 200 feet, and in the event such highway is intersected or intercepted by other highways at least two of such notices shall be posted in each block. In no event shall less than three copies of the notice be posted. Postings shall be made within five days of the date of the first publication, if any. Within five days after the same is posted, a copy of such notice shall be furnished to the governing body having jurisdiction of any such intersecting or intercepting highway.
Ca. Sts. and High. Code § 855