The Olympia Odos project—largest of the five concessionaires with an original contract of more than $2 billion, now restructured in a reduced scope to $1.4 billion—comes with its share of Olympic-sized challenges. In the task of upgrading the 63.2-km-long Elefsina-Corinth route and the 18.3-km Patras Bypass and building the 120-km Corinth-Patras link, the Vinci and Hochtief-led construction team had to blend the old with the new.

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