The Derveni Tunnels (Greek: Σήραγγες Δερβενίου) are two contiguous tunnels on the Patras - Corinth section of the Olympia Odos motorway. They bypass the coastal town of Derveni, located near the border with the Achaea regional unit. Works began in 2008 along with the whole motorway, but they were halted in 2011. They were again resumed in early 2014. It was opened to traffic on September 2, 2016, the same day of the opening of the Ancient Corinth-Kiato segment.^[1]

Derveni Tunnel

Overview
Location	Corinthia, Greece
Coordinates	38°07′48.9″N 22°25′16.5″E / 38.130250°N 22.421250°E / 38.130250; 22.421250
Status	Operational
Route
Operation
Work begun	2008
Opened	2 September 2016
Operator	Olympia Odos S.A.
Traffic	automotive
Character	Twin-tube motorway tunnel
Technical
Length	480 m (1,570 ft) (first tunnel) 629 m (2,064 ft) (second tunnel)
No. of lanes	2x2