The project concerns the upgrading of the section Gravias Bypass End Level Bauxite Mining Node with a total length of 470 km of the road axis Lamia Itea Antirrio This section begins after the end of the Gravia bypass with mostly improvement of the existing road in the area of Stenorema and new alignment afterwards to avoid successive closed turns of the existing road. direction while an additional idling lane will be constructed on the uphill from the junction of Vargiani until the end of the section In addition, 2 level junctions of Vargiani and Bauxite Mines retaining walls of about 590 m 1 bridge with a total length of 12150 m and a width of 1825 m small technical walls and interception ditches will be constructed.