The 1915 Çanakkale Bridge, also known as the Dardanelles Bridge (Çanakkale Boğaz Köprüsü), is a road suspension bridge in the province of Çanakkale in northwestern Turkey. Situated just south of the towns of Lapseki and Gelibolu, the bridge spans the Dardanelles strait, about 10 km south of the Sea of Marmara.
The bridge was officially opened by President Recep Tayyip Erdoğan on 18 March 2022 after roughly five years of construction. The year "1915" in the official Turkish name honors an important Ottoman naval victory against the British and the French during World War I.
The bridge is the longest suspension bridge in the world—with a main span of 2,023 m, the bridge surpasses the Akashi Kaikyo Bridge (1998) in Japan by 32 m. It is the centerpiece of the planned 321-kilometre long US$2.8 billion Kınalı-Balıkesir Motorway, which will connect the O-3 and O-7 motorways in East Thrace to the O-5 motorway in Anatolia.
The deck of the bridge is 72.8 m high and 45.06 m wide, with a maximum thickness of 3.5 m. The deck carries six lanes of motorway (three in each direction), together with two walkways on each side for maintenance.
The bridge is the first fixed crossing over the Dardanelles and the sixth one across the Turkish Straits, after three bridges over the Bosphorus and two tunnels under it.
According to wikipedia