A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. Simple suspension bridges, which lack vertical suspenders, have a long history in many mountainous parts of the world.
A cable-stayed bridge has one or more towers, from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly.
The Fatih Sultan Mehmet Bridge, also known as the Second Bosphorus Bridge, is a bridge in Istanbul, Turkey spanning the Bosphorus strait. When completed in 1988, it was the 5th-longest suspension bridge span in the world.
The Osmangazi Bridge is a suspension bridge spanning the Gulf of İzmit at its narrowest point, 2,620 m (8,600 ft). The bridge links the Turkish city of Gebze to the Yalova Province and carries the O-5 motorway across the gulf.
A suspension bridge supports its structural load with cables, ropes, or chains anchored at each end. Cables on the earliest suspension bridges were anchored in the ground; some modern suspension bridges anchor the cables to the ends of the bridge itself. Earliest suspension bridges had no towers or piers but the majority of larger modern suspension bridges have them. All of the 14 longest bridges in the world are suspension bridges.
An extradosed bridge employs a structure that combines the main elements of both a prestressed box girder bridge and a cable-stayed bridge. The name comes from the word extrados, the exterior or upper curve of an arch, and refers to how the "stay cables" on an extradosed bridge are not considered as such in the design, but are instead treated as external prestressing tendons deviating upward from the deck. In this concept, they remain part of the main bridge superstructure.
The Bosphorus Bridge, known officially as the 15 July Martyrs Bridge and unofficially as the First Bridge, is one of the three suspension bridges spanning the Bosphorus strait in Istanbul, Turkey, thus connecting Europe and Asia. The bridge extends between Ortaköy and Beylerbeyi.
The Yavuz Sultan Selim Bridge is a bridge for rail and motor vehicle transit over the Bosphorus strait, to the north of two existing suspension bridges in Istanbul, Turkey. It was initially named the Third Bosphorus Bridge. The bridge is located near the Black Sea entrance of the Bosphorus strait, between Garipçe in Sarıyer on the European side and Poyrazköy in Beykoz on the Asian side.
The Port à l'Anglais Bridge is a cable-stayed suspension bridge that spans the Seine river between the French communes Alfortville and Vitry-sur-Seine. It carries two lanes of automobile traffic and has pedestrian walkways on each side.
The 1915 Çanakkale Bridge, is a road suspension bridge in the province of Çanakkale in northwestern Turkey. Situated just south of the coastal towns of Lapseki and Gelibolu, the bridge spans the Dardanelles, about 10 km (6.2 mi) south of the Sea of Marmara. The bridge was officially opened by President Recep Tayyip Erdoğan on 18 March 2022 after roughly five years of construction. The year "1915" in the official Turkish name honours an important Ottoman naval victory against the navies of the United Kingdom and France during World War I.
The Golden Horn Metro Bridge is a cable-stayed bridge carrying the M2 line of the Istanbul Metro across the Golden Horn in Istanbul, Turkey. It connects Karaköy and Küçükpazarı on the European side of Istanbul, and is located between the Galata Bridge and Atatürk Bridge, approximately 200 m (660 ft) east of the latter. It is the fourth bridge across the Golden Horn and entered service on February 15, 2014.
The Otoyol 7, or Kuzey Marmara Otoyolu, is a toll motorway that bypasses Istanbul to the north. The motorway is 243km in length between the Kınalı junction and the Akyazı junction, and is 8 lanes wide.
A floating suspension bridge is a type of suspension bridge supported by towers built on floating pontoons which are tethered to the seabed. The design is intended to overcome the difficulties of building suspension towers in locations where the water is particularly deep. As of 2021 no such bridges have been built, but a project is underway to build one in Norway, at Bjørnafjord, designed by engineer Ian Firth.
A Floating cable-stayed bridge is a type of cable-stayed bridge where the towers float on tension-leg submerged material, tethered to the seabed for buoyancy. No floating cable-stayed bridge has been made or planned yet, a floating suspension bridge has been planned in Norway. This bridge could be more stable horizontally across the bridge than floating suspension bridges, the lateral movement force from the wind and current in the water is a problem trying to be resolved by placing the tethered cables at different angles from the floating platform to the seabed.
