Cal. Sts. & Hy. Code § 170
Where it is estimated by the department that the work involved in a project to be constructed under the State Contract Act (Chapter 1 (commencing with Section 10100) of Part 2 of Division 2 of the Public Contract Code) will not be completed within a given fiscal year, the department, in the contract specifications, may provide a limitation upon the amounts that will be paid to the contractor during the first or second fiscal years of the construction period. Subject to this limitation, the contracts shall provide for the completion of the work and full payment therefor.
For the purposes of complying with Section 169, the department may include in any proposed budget, and the commission may allocate, at least the amounts with reference to those construction projects as would be payable during the fiscal year, together with all necessary engineering and other charges.
Ca. Sts. and High. Code § 170