The board of supervisors of any county may initiate proceedings proposing the creation of a joint district for the purpose of maintaining a joint county road camp or camps under the provisions of this article to be composed of two or more counties having a combined population of not less than 50,000 persons, according to the official census next preceding the formation of such district, by the adoption of a resolution reciting the following:

1. (1) That it will be beneficial to the public interest to create a joint district wherein persons confined in any county jail within such district under a final judgment of imprisonment rendered in a criminal action or proceeding may be required to perform labor on the public works or ways within said district, and that a joint county road camp or camps be established and maintained for that purpose.
2. (2) The names of the counties proposed to be included in the proposed district which will be benefited by the formation thereof.
3. (3) That it is proposed to create a joint district for the establishment and maintenance of a joint county road camp under the provisions of this article composed of the counties so named.