Cal. Sts. & High. Code § 109

Any such bridge acquired, constructed, reconstructed, replaced or improved in the manner provided in sections 106, 107 and 108 is a part of the State highway system and title thereto shall vest in the State. Any funds which, without such cooperative agreement, would be available for the construction, reconstruction, replacement, improvement or maintenance of a bridge at such location on the State highway system, shall be available for a similar use under such cooperative agreement.