spans length: clearance: tower height: tower size (at the base): deck size: The 34,000 tons of steel used to build the bridge was obtained from ArcelorMittal Galaţi, Romania. The bridge is fourth longest suspension bridge in the world. Accident at construction site On 21 March 2015 a catwalk broke away from its bolted joint cable on the south tower during the construction at the bridge and fell into the water. Added in February 2015, the catwalk was needed to allow workers access to the other side of the bay. No one was harmed by the accident as work was interrupted at this section due to windy weather. Marine traffic to and from İzmit Bay was suspended following the accident for security reasons and resumed after recovering the cable in the morning of 23 March. Kishi Ryoichi, the 51-year-old Japanese engineer of the IHI-Itochu Consortium, who was in charge of the construction at site, committed suicide after the accident. He was found dead at the entrance of a cemetery near his lodging in Altınova. He left a note saying that "...this failure ends my private and professional life. This project was mine and my country's pride. No one else is responsible for this failure." Tolls As of 8 October 2021 the bridge tolls are: In popular culture The five-time Supersport World champion Kenan Sofuoğlu from Turkey made a show of a motorcycle speed trial in the early morning of 30 June 2016, right before the official opening of the bridge. He crossed the distance in 26 seconds reaching a top speed of on his Kawasaki Ninja H2R track-only motorcycle. See also Bosphorus Bridge Fatih Sultan Mehmet Bridge Yavuz Sultan Selim Bridge Çanakkale 1915 Bridge Eurasia Tunnel, undersea tunnel, crossing the Bosphorus for vehicular traffic, opened in December 2016. Marmaray, undersea rail tunnel connecting the Asian and European sides of Istanbul. Great Istanbul Tunnel, a proposed three-level road-rail undersea tunnel. Public transport in Istanbul Rail transport in Turkey Turkish Straits References External links Bridges completed in 2016 Sea of Marmara Road bridges in Turkey Toll bridges in Turkey Suspension bridges in Turkey Buildings and structures in Kocaeli Province Gebze Buildings and structures in Yalova Province Transport in Kocaeli Province Transport in Yalova Province 2016 establishments in Turkey Altınova