European Open Procedure Tender For The Award, Through A Framework Agreement Pursuant To Art. 59 Co. 4, Of The Design Verification Service Pursuant To Art. 42 Of Legislative Decree 36/2023 And Subsequent Amendments, Relating To Work Projects Relating To The Maintenance And Modernization Of Assets Present On The Italian Motorway Network Managed Under Concession By Autostrade Per L'Italia S.P.A.