An additional lane at the Pallini junction, the possibility of connecting the Rafina branch to the airport, and a fourth lane from Pentelis Avenue to Metamorfosi are included among the ten measures proposed by the supplementary environmental impact assessment studyAttica Tollway. The study was carried out by ENVECO S.A. and is currently under consultation as part of the renewal of the motorway’s environmental permit. Its contents were reported by businessdaily.gr and republished by iRafina on Wednesday 11 November.
The most important thing for drivers to note: no final decisions have been made regarding which improvements will be carried out and when. The study states that the projects, ‘should they be implemented in the future’, will improve the functioning of the road.
Information for those travelling from Artemida and Spata
Pallini. In the area of the Pallini grade-separated junction on Marathon Avenue, an additional 1.3-kilometre-long lane is proposed. The carriageway will be widened by 2.15 metres, bringing the number of through lanes to three.
Rafina branch. Among the key projects is the upgrade of the Leontario junction, where Attiki Odos meets the Western Ymittos Ring Road, with turning lanes that will ease traffic flow at the Doukissis Plakentias junction. The same package states that ‘the possibility of connecting the Rafina branch to the airport will also be ensured’. The report does not explain how this will be achieved.
Central section. From the Penteli Avenue junction to the eastern approach to the Metamorphosis junction, a distance of 6.3 kilometres, it is proposed to add one extra lane in each direction, bringing the total to four. This is the stretch where traffic jams form every morning for those travelling from Mesogeia towards the northern suburbs and the National Road.
The Rafina and Vravrona streams. A closed rainwater drainage system is being considered along the entire 79-kilometre length, along with Pollution Control Units, to ensure that water washing over the road surface does not end up untreated in the Rafina and Vravrona streams. The Vravrona stream, known as the Erasinus, flows into the wetland next to the archaeological site.
The list also includes fuel tanks for the company’s vehicles at the Paiania Service and Maintenance Centre, the replacement of metal crash barriers, LED lighting and a pedestrian escape exit in the Vrilissia tunnel.
Why now?
Traffic on the Attica Motorway increased by 4.6 per cent in 2025 and by 2.4 per cent in the first half of 2026, whilst major extensions, costing over 2 billion euros, are not progressing. The study examined four scenarios and favours ‘Solution B’: works carried out almost exclusively within the current road right-of-way, with an additional area of 0.004 square kilometres, or 4 stremmata. It rejects the solution involving new road alignments because it ‘requires extensive land expropriation’.
The only project currently under way is the dual exit towards Lamia at the Metamorfosis junction, at a cost of 2.45 million euros, carried out by the concessionaire GEK TERNA, with completion scheduled for December. As for the rest, the plan is for the road to remain open whilst work is in progress, with construction taking place in sections.
Source: Supplementary Environmental Impact Assessment for the Attica Motorway (ENVECO S.A.), as reported by businessdaily.gr and iRafina, 11 November 2026.
