Aktio–Preveza Undersea Tunnel, Tunnel in Griechenland
The Aktio-Preveza Undersea Tunnel is an underground passage beneath the Ambracian Gulf in Greece, connecting Epirus with the city of Preveza to the north and extending toward Aetolia-Acarnania. Measuring approximately 1,570 meters in length with over 900 meters submerged, it features two driving lanes and a pedestrian walkway.
Planned in the 1990s and completed in 2002, this passage replaced the long and weather-dependent ferry journey across the gulf with a direct route. International teams from Denmark and Greece collaborated to construct it, addressing the seismic challenges of this earthquake-prone area.
The name reflects the two coastal towns it connects, rooting the tunnel in the local identity of the region. It represents how modern infrastructure brings communities closer together across the waters.
Drivers can pass through by paying a toll of about 3 euros at the booths on either side. Pedestrians and cyclists cannot cross alone and must arrange organized transfers beforehand, so plan ahead if traveling without a car.
It is Greece's only underwater tunnel and a rare engineering achievement in an earthquake-prone area. The structure was fitted with special supports to handle ground movement during seismic activity, making it a notable example of engineering adapted to local geological conditions.
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