Reinventing Economic Partnerships And Infrastructure Redevelopment Act or the REPAIR Act This bill addresses the financing of infrastructure projects through the establishment of the Infrastructure Financing Authority (IFA) and increases the national limitation on the amount of tax-exempt highway or surface freight transfer facility bonds. Specifically, the bill directs the IFA to provide direct loans and loan guarantees to facilitate certain infrastructure projects that are economically viable, in the public interest, and of regional or national significance, including the construction, consolidation, alteration, or repair of airports and air traffic control systems, highway facilities, and transmission or distribution pipelines; sets forth terms and limitations on direct loans and loan guarantees; establishes a funding mechanism to make the IFA a self-sustaining entity, including through fees and risk premiums on loans and loan guarantees; and increases from $15 billion to $16 billion the national limitation on the amount of tax-exempt financing for highway or surface freight transfer facilities.