Bosphorus Bridge is and the total height of the towers is . The clearance of the bridge from sea level is . Upon its completion in 1973, the Bosphorus Bridge had the fourth-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
Ralph Freeman (1911–1998) projects: the M2 and M5 motorways, the Forth Road Bridge, the Severn Bridge, both Bosporus bridges, and the harbour tunnel and mass transit rail systems in Hong Kong. He served as president of the Institution of Civil Engineers in 1966-7. The pinnacle of his career was the Humber suspension bridge which, when it opened in 1981, was the longest single-span suspension bridge in the world, 1410m between its two 155m-high pylons. His son, Ralph (but known as Anthony), who also took up civil engineering, died in July 1998 after an accident on the Vasco da Gama bridge in Lisbon. Ralph