The project concerns the upgrading of the Kalloni-Sigrio Lesvos road axis, with a length of 46.7 km, and includes:(a) The improvement in parts, over a total length of approximately 21 km, of the existing road, with an upgrade of its geometrical characteristics.b) The construction of new sections over a length of approximately 25.7 km.Also, the required expropriation, displacement work – restoration of networks of Public Benefit Organisations, archaeological research and works of the island, as well as research in the areas of Lefkos.