Section 164. Term of franchises limited -- Advertisement and bids.

No county, city, town, taxing district or other municipality shall be authorized or permitted to grant any franchise or privilege, or make any contract in reference thereto, for a term exceeding twenty years. Before granting such franchise or privilege for a term of years, such municipality shall first, after due advertisement, receive bids therefor publicly, and award the same to the highest and best bidder; but it shall have the right to reject any or all bids. This section shall not apply to a trunk railway.