The several boards of county commissioners in this state shall, from time to time, upon request of the city council, apportion to each incorporated city within the respective counties such proportion of the general road fund of the county as the value of the whole property within the corporate limits of such city, as shown by the assessment roll, shall bear to the whole property of the county, inclusive of the property within incorporated cities, and all such moneys so apportioned shall be expended upon the streets, alleys and public highways of such city under the direction and control of the council.
NRS 266.610