An authority may contract for the planning, acquisition, construction, reconstruction, operation, maintenance, repair, extension, and improvement of a project or may contract with one or more units to perform these functions, by advertising for bids, preparing plans and specifications in advance of construction, or securing performances and payment bonds to the extent that its board of directors determines that these actions are desirable in furtherance of the purposes of this chapter. Except as otherwise provided by this section, no contract shall be invalid or unenforceable by reason of nonperformance of the conditions required by any other law relating to public contracts.