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.

While Olympia Odos is the largest single concessionaire project of the five, Greece’s Gek Terna and Spain’s ACS and Ferrovial are the key players in two of the others—Nea Odos and Kentriki Odos, totalling over $2 billion.

Executive order also revokes 2015 Obama directive establishing flood-risk standard for infrastructure projects.