km west - connection via Egnatia Motorway, Thessaloniki's new West Entrance and Thessaloniki's Ring Road) Nea Anchialos - (10 km west - connection via National Road 30) Athens (Eleftherios Venizelos Airport) - (25 km west - connection via Attiki Odos) Harbours The ATH motorway is connected to the following harbours: Thessaloniki Volos Piraeus Distances in kilometers History 1950s-1970s The old Greek National Road 1, was a historic road, which connected Athens with the Customs of Evzoni, through Dhekelia, Atalanti, Kamena Vourla, Thermopylae, Lamia, Stylida, Almyros, Velestino, Larissa, Valley of Tempi, Katerini, Alexandria, Gefyra and Polykastro. The road followed the route of the streets of antiquity. However, over time, its specifications began to be considered obsolete, as in the rest of Europe, modern highways began were started to be built. Thus, in the mid-1950s, construction work began on a new road, which began in 1959 with the delivery of the Larissa-Katerini section (Later, the Athens-Lamia section in 1962 and the Lamia-Larissa section in 1967) and were completed in 1973, with the delivery of the part Katerini - Thessaloniki - Evzoni. For the most part it was - (except for the part of the Valley of Tempi, which was , because it was built on a mountain) and 2 traffic lanes (1 lane + 1 auxiliary lane in each direction), without a median strip. The Polykastro - Evzoni section was the first section with motorway specifications. 1980-today Work on the conversion to a motorway began in the mid-1980s, with the construction of the sections Klidi interchange- Gallikos river (delivered in 1988), Bogiati camp - Kryoneri interchange (delivered in 1989) (4.5 km), Inofyta interchange- Schimatari interchange (delivered in 1989) (12.5 km), Ritsona interchange - Thebes interchange (delivered in 1989) (14.8 km). In the early 1990s, work began on the entire length of the sections Athens - Thebes interchange, and Katerini - Klidi. As early as 1995, National Road 1 had highway specifications in the sections Athens - Yliki, Katerini - Klidi - Thessaloniki and Polykastro - Evzoni. In 1998, it had six lanes in the Athens (Metamorfosi) -Thebe section and four in the Thebes-Tempi section, with the exception of a few sections in Magnesia, which still had two. In 2002 the Yliki-Agios Konstantinos section was completed. In 2004 the first tunnel of the A1 was built, the tunnel of Katerini (tunnels of Alexander the Great and Philip), while in the same year Kifissos