State not to engage in internal improvements or lend money or creditfor same; interest in private enterprises prohibited; exception as to public roads, highways and bridges.

The state shall not engage in work of internal improvement nor lend money or its credit in aid of such; nor shall the state be interested in any private or corporate enterprises or lend money or its credit to any individual, association, or corporation, provided that the state may under appropriate laws cause the net proceeds from the state convict fund to be applied to the construction, repair and maintenance of public roads in the state and the legislature may also make additional appropriations for that purpose.