Greek National Road 31 (), abbreviated as the EO31, is a national road in the Peloponnesian part of Western Greece. The EO31 runs between the towns of Aigio and Kalavryta.
Route
The EO31 is officially defined as a north–south road located entirely in the Achaea regional unit, running between Aigio in the north and Kalavryta in the south, via Pteri: the road connects with the EO8 at Aigio, which leads to the A8 motorway.
History
Ministerial Decision G25871 of 9 July 1963 created the EO31 from the old EO55, which existed by royal decree from 1955 until 1963, and followed the same route as the current EO31.
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