The objective of the project was the completion of the study phase so that the tendering and construction phases of the segment of Paraionia Highway from the existing Gournia bridge, over the Acheloos River, to the Aetolikon - Aggelokastro - Agrinio road (6.1 km long) could be implemented. This highway segment passes through the already opened tunnel of Agios Elias. The contract comprised the following studies: a) highway engineering and traffic studies (one grade-separated junction and one junction at grade, sign and safety study), b) E/M studies (junctions and tunnel mouths), c) structural studies (four bridges, one overpass, two underpasses), d) hydraulic studies (grade-separated junction), e) survey and cadastre, f) geological (borrows), and g) geotechnical studies and research (embankments and a trench at the eastern mouth of the tunnel).