Greek National Road 57 (), abbreviated as the EO57, is a national road in northern Greece. The EO57 runs within the Drama regional unit, from Drama to the border crossing with Bulgaria near : however, the border crossing itself was turned into a tunnel in 2005.
The EO57 is officially defined as a northâÂÂsouth road within the Drama regional unit: the EO55 runs between Drama to the south and the border with Bulgaria near to the north, passing through Kato Nevrokopi. The border crossing itself became a tunnel on 9 December 2005. The EO57 connects with the EO12 in western Drama.
Ministerial Decision G25871 of 9 July 1963 created the EO57 from the old EO45, which existed by royal decree from 1955 until 1963, and followed the same route as the current EO57.