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Bosphorus Bridge

Bosphorus Bridge
Boğaziçi Köprüsü
Bosphorus Bridge.jpg
Bosphorus in Istanbul, connecting Europe and Asia.
Coordinates 41°02′43″N 29°02′04″E / 41.04528°N 29.03444°E / 41.04528; 29.03444Coordinates: 41°02′43″N 29°02′04″E / 41.04528°N 29.03444°E / 41.04528; 29.03444
Carries 3 lanes of Motorway in each direction
Crosses Bosphorus strait
Locale Istanbul
Official name Turkish: 15 Temmuz Şehitler Köprüsü
Maintained by Turkish Highways Association
Characteristics
Design Suspension bridge
Material Steel
Total length 1,560 m (5,118 ft)
Width 33.40 m (110 ft)
Height 165 m (541 ft)
Longest span 1,074 m (3,524 ft)
Clearance below 64 m (210 ft)
History
Designer Sir Gilbert Roberts and William Brown
Construction begin 20 February 1970
Construction end 1 June 1973
Opened 30 October 1973
Statistics
Daily traffic 200,000
Toll Only in one direction
Bosphorus BridgeBoğaziçi Köprüsü is located in Istanbul
Bosphorus BridgeBoğaziçi Köprüsü
Bosphorus Bridge
Boğaziçi Köprüsü
Location in Istanbul

The Bosphorus Bridge (Turkish: Boğaziçi Köprüsü) or oficially 15 July Martyrs Bridge (Turkish: 15 Temmuz Şehitler Köprüsü), also called the First Bridge (Turkish: Birinci Köprü), is one of three suspension bridges spanning the Bosphorus strait (Turkish: Boğaziçi) in Istanbul, Turkey, thus connecting Europe and Asia (alongside Fatih Sultan Mehmet Bridge and Yavuz Sultan Selim Bridge). The bridge extends between Ortaköy (in Europe) and Beylerbeyi (in Asia).

It is a gravity-anchored suspension bridge with steel towers and inclined hangers. The aerodynamic deck hangs on zigzag steel cables. It is 1,560 m (5,118 ft) long with a deck width of 33.40 m (110 ft). The distance between the towers (main span) is 1,074 m (3,524 ft) and the total height of the towers is 165 m (541 ft). The clearance of the bridge from sea level is 64 m (210 ft).

Upon its completion in 1973, the Bosphorus Bridge had the 4th-longest suspension bridge span in the world, and the longest outside the United States (only the Verrazano–Narrows Bridge, Golden Gate Bridge and Mackinac Bridge had a longer span in 1973). The Bosphorus Bridge remained the longest suspension bridge in Europe until the completion of the Humber Bridge in 1981, and the longest suspension bridge in Asia until the completion of the Fatih Sultan Mehmet Bridge (Second Bosphorus Bridge) in 1988 (which was surpassed by the Minami Bisan-Seto Bridge in 1989). Currently, the Bosphorus Bridge has the 25th-longest suspension bridge span in the world.


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