The project relates to the second phase of the segmented project to improve/upgrade the existing Western Internal Regional (desper) Thessaloniki Road to a length of about 6 km. with the construction of a six-track cross section road (3 lanes per direction without Emergency Lane) and central islet. It also includes the construction of 5 off-road nodes (R/K), with the aim of ensuring the continuous flow of vehicles, improving road safety and increasing road capacity. In more detail, these are: 1. Reg. 3 September: Construction of 2 Up Crossings on Vembo Streets and September 3rd and upgrading of the connecting branches. 2. Maeander: Subterraneanisation of the desperation, construction of the connecting branches of the artery and forming a roundabout above the despot. 3. A/M Makrygiannis: Undergrounding, construction of the connecting branches of the artery, forming 2 circular level nodes and their connecting road. 4. Mr Lagadas and Stavroupolis: Construction of a bridge of 2 independent branches over Oreokastro and Lagada. 5. A/C 14 at the intersection of the miss with the 25th of March. Subterraneanisation of the desperation, construction of the connecting branches of the artery and forming a roundabout above the despot. The project also includes the replacement of the security posts, the central islet and the asphalt along the road, the construction of a building of Traffic Control, the construction of an electromechanical plant building, as well as interventions in the adjacent and local network. The overall intervention also includes the necessary studies/experts and the costs of Public Benefit Organisations (OKOs), land acquisition and archaeology.