Greek National Road 77 (), abbreviated as the EO77, is a national road on the island of Euboea, Greece. It connects Chalcis with Aidipsos, via Agia Anna and Istiaia.
Route
The EO77 is officially defined as a north–south route located entirely within the island of Euboea: it runs between Chalcis in the south and Aidipsos in the north, passing through Istiaia further up north. The EO77 connects with the EO44 in central Chalcis.
History
Ministerial Decision G25871 of 9 July 1963 created the EO77 from the old EO12, which existed by royal decree from 1955 until 1963, and followed the same route as the current EO77.
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