|Part of E90|
|Length||670 km (420 mi)|
|Regions||Epirus, Macedonia, Thrace|
Egnatia Odos or Egnatia Motorway (Greek: Εγνατία Οδός, often translated as Via Egnatia, code: A2) is the Greek part of European route . It is a motorway in Greece that extends from the western port of Igoumenitsa to the eastern Greek–Turkish border at Kipoi. It runs a total of 670 km (420 mi). The megaproject began in 1994 and was completed in 2009 at a cost of €5.93 billion ($7.01 billion); it was managed by the state-owned company Egnatia Odos, S.A.
The route traverses the mountainous Greek regions of Epirus and Macedonia, crossing the Pindos and Vermio mountain ranges, which posed formidable engineering challenges. It includes 76 tunnels (with a combined length of 99 km / 61.5 miles) and 1,650 bridges. It is a limited-access highway with sophisticated electronic surveillance measures, SCADA controls for the lighting/tunnel ventilation, and advanced vehicle collision absorption measures.
Part of its length, a section of about 360 km (220 mi) from Evros to Thessaloniki, parallels the ancient Roman Via Egnatia, which ran from modern Durrës in Albania to Thessaloniki and thence to Byzantium (now Istanbul, Turkey). The project has therefore been dubbed a modern Via Egnatia (in Greek, Egnatia Odos / Εγνατία Οδός). However, the parallel is not exact; the original Via Egnatia was much longer (1,120 km / 696 miles) and its western section, from Thessaloniki to the Adriatic Sea, ran much further north than the modern road.
The project has raised concerns for the survival of nearby sites of ecological and archaeological significance. The construction of the Pindos stretch (i.e. from Grevena to Ioannina) was delayed due to environmental concerns about the destruction of the habitat of the endangered brown bear. However, a new routing was proposed in 2003, and this part was completed by April 2009.
In addition to the main highway, three perpendicular auxiliary highways are under construction connecting the highway to important cities, ports and airports of Macedonia.
94 km of the motorway had been built as part of other motorways, before the official project began in 1994. Between 1997 and 2004, 393 km of motorway were built. The main part of the project was completed by 30 May 2009. A final bridge was opened on 10 May 2014 
The exits of the completed sections of the A2 motorway:
|Regional unit||Exit||Name||Destinations||Notes/Also as|
|Evros||Kipoi-İpsala border crossing|| D.110D110
||eastern terminus of the A2|
|42||Alexandroupoli industrial area|
Corridor IX to Bulgaria
|28A||Galypsos – Orfani|
|Mesi||to Naousa, Skydra|
|6A||Peristeri – Chrysovitsa|
|6||Arachthos – Zagoria|
|Thesprotia||3||Selloi – Tyria|
|2||Neochori – Paramythia|
|1A||Igoumenitsa – Ladochori|
|1||Igoumenitsa – Lykopodi|
ferry to Kerkyra, Italy
|western terminus of the A2|
In 2020, EIB and Egnatia Odos are committed to fund treatment of 7000 high risk sites in Greece.