1. In any first or second class county not having a charter form of government, which contains all or any part of a city with a population of greater than four hundred thousand inhabitants, in which the voters have approved a sales tax as provided by section 67.547, the county commission may:

(1) Reduce or eliminate the county general fund levy, the special road and bridge levy, or the park levy;

(2) Grant county revenues to cities, towns and villages and to special road districts organized pursuant to chapter 233;

(3) Enter into agreements with cities, towns, villages, and special road districts organized under chapter 233 for the purpose of working cooperatively on the roads and bridges located within the county, including the distribution of funds to such entities in addition to those funds described in subsection 2 of this section.

2. In any county in which the voters have approved a sales tax as provided by section 67.547, each city, town, village, and special road district organized under chapter 233 shall continue to receive its share of the county’s special road and bridge levy, if any, that is annually considered by the county commission. In the event that the annual special road and bridge levy is not set at a level of at least fourteen cents on each one hundred dollars assessed valuation, the county commission shall allocate additional funds from any available county source to the cities, towns, villages, and special road districts located within the county in an amount that will, when combined with the revenues received from the special road and bridge levy, distribute funds to such entities in an amount that is at least equal to the funding level of fourteen cents on each one hundred dollars assessed valuation. Additionally, any city, town, or village which contains at least fifty percent of a special road district organized under chapter 233 shall be entitled to receive the road district’s portion of any funds not paid through the special road and bridge levy. Any funds paid under this subsection shall be paid as if the funds were paid under the county’s special road and bridge levy.