California Code, Streets and Highways Code - SHC § 380.4

(a) The Legislature finds and declares that there will be increased traffic on San Pablo Avenue in the Cities of Richmond, San Pablo, Pinole, Hercules, and El Cerrito, and other portions of San Pablo Avenue in the County of Contra Costa by motor vehicles detoured because of construction work on Route 80 in Contra Costa County.

(b) It is the intent of the Legislature in enacting this section that the state share in the cost of maintaining and operating San Pablo Avenue to the extent that it is used as an alternative to Route 80 during construction.  It is the further intent of the Legislature that the department pay up to the amount authorized in this section to the County of Contra Costa and to each city specified in subdivision (a).

(c) During the period of construction, the department may pay annually to the County of Contra Costa and to each of the cities specified in subdivision (a) for the added costs of maintenance and operation of San Pablo Avenue.  The total obligation of the department for this purpose shall not exceed seventy-five thousand dollars ($75,000) per year, adjusted for inflation, as reflected by a change in a national or regional index that measures the rate of inflation, as determined by the department.

(d) This section shall remain in effect only until the commission certifies to the Secretary of State that construction is complete on the project on Route 80 in Contra Costa County to convert the existing shoulder to additional traffic lanes, and as of the date of that certification is repealed.