Gefyra was awarded a 42 year concession in 1997, taking full responsibility for the design, construction, finance, maintenance and operation of the bridge. The main contractor is Kinopraxia Gefyra ' a joint venture of six Greek contractors led by France's Dumez-GTM. Supervising engineer is Fabermaunsell. The contractor's consultants are Ingerop and Domi while the checking engineer is Buckland & Taylor.