That the City of Cookeville is authorized to provide for, construct, and finance improvements defined in Section 1 (6A.01) according to the plan set forth in this Act (Article). The authority hereby conferred is not intended to be in derogation of any authority otherwise conferred upon the municipality, but is alternative and in addition thereto. If the municipality has taken any step or steps under any other law to provide for, construct or finance such improvements, it may by resolution abandon the procedure under the other law and proceed under the provisions of this Act (Article). The issuance of bonds under this Act (Article) shall not be subject to any limitations on municipal indebtedness imposed by the municipality's charter or any public or private act. [As added by Priv. Acts 1970, ch. 276, § 2]