A consortium building Gebze-Orhangazi-Izmir motorway has started seeking international advisers to value the project ahead of a possible stake sale. In a first stage, the consortium will determine the value of the project and potential buyers, the consortium, which includes Astaldi S.p.A. (BIT:AST), said in a statement. “It is a lengthy process to sell a stake in a project of this scale,” the consortium said, adding it would be up to the partners to decide whether to dispose of their share.