METU Civil Engineering Department Emeritus faculty member Dr. Erhan Karaesmen organized a technical trip to the factory and construction site of the Istanbul Strait Road Tube Crossing Project on January 20th, 2015 and to Selimiye Mosque on January 20th, 2015 and to the construction site of the suspension bridge at the Izmit and Yalova crossing of the Istanbul – Izmir motorway project on January 22th, 2015.