The Fatih Sultan Mehmet Bridge, also known as the Second Bosphorus Bridge (in Turkish: Fatih Sultan Mehmet Köprüsü, F.S.M. Köprüsü or 2. Boğaziçi Köprüsü), is a bridge in Istanbul, Turkey spanning the Bosphorus strait (Turkish: Boğaziçi). The bridge is named after the 15th century Ottoman Sultan Mehmed the Conqueror, who took Constantinople (Istanbul) in 1453 and ended the Byzantine Empire. The bridge carries the E80, AH1 and O-2 highways.
The bridge is situated between Hisarüstü (European side) and Kavacık (Asian side). It is a gravity-anchored suspension bridge with steel pylons and vertical hangers. The aerodynamic deck is hanging on double vertical steel cables. It is 1,510 m long with a deck width of 39 m. The distance between the towers (main span) is 1,090 m and their height over road level is 105 m. The clearance of the bridge from sea level is 64 m. Fatih Sultan Mehmet Bridge had the 6th longest suspension bridge span in the world when it was completed in 1988. At present, it has the 15th longest suspension bridge span in the world.