Design And Construction Of Civil And Building Works Including Testing And Commissioning On Design Build Lump Sum Price Basis For Double Line High Speed Railway Involving Viaducts, Bridges, Maintenance Depots, Tunnel, Stations (Vapi, Bilimora, Surat And Bharuch), And Surat Depot Between Zaroli Village At Maharashtra-Gujarat Border (Mahsr Km. 156.600) And Vadodara (Mahsr Km. 393.700), Excluding Works For 04 No. Psc Bridges And 06 No. Steel Truss Bridges, In The State Of Gujarat And The Union Territory Of Dadra And Nagar Haveli For The Project For Construction Of Mumbai-Ahmedabad High Speed Rail.- Addendum