Rehabilitation works on nine railway tunnels (T154, T156, T157, T165, T167, T169, T215, T218 and T247) along the Vrbnica–Bar railway line in Montenegro, with a combined length of approximately 2,921.5 metres. The works will be carried out whilst the line remains in commercial operation, in defined daily traffic intervals as set out in the Tender Documents. The Contract is co-financed by the European Investment Bank under the Western Balkans Investment Framework (WBIF) and is governed by the FIDIC Conditions of Contract for Construction (Red Book), 2017 Edition.