The bridge is the centerpiece of a planned 321-kilometre-long (199 mi) 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. With a main span of 2,023 m (6,637 ft), the bridge surpassed the Akashi Kaikyo Bridge in Japan by 32 m (105 ft) to become the longest suspension bridge in the world.[4]