The Mecidiyeköy Viaduct in Turkey is located on the “Circular Road,” Highway E-5, which is one of the most used roads for traffic flow, both for Istanbul City and the nation. The road is a vital link in case of earthquakes and other natural disasters, both for emergency vehicles and relief teams.  Miyamoto provided quality control, project management, construction-supervision services and rearrangement of design and erection documents, following local standards for steel jacketing of the piers, RC lining reinforcement at the pier bottoms and placement of damping devices such as isolation bearings on pier tops.