1915 Çanakkale Bridge in the context of "Dardanelles"

Çanakkale Province (Turkish: Çanakkale ili) is a province of Turkey, located in the northwestern part of the country. It takes its name from the city of Çanakkale. Its area is 9,817 km, and its population is 559,383 (2022).

Like Istanbul, Çanakkale province has a European (Thrace) and an Asian (Anatolia) part. The European part is formed by the Gallipoli (Gelibolu) peninsula, while the Asian part is largely coterminous with the historic region of Troad in Anatolia. They are separated by the Dardanelles strait, connecting the Sea of Marmara and the Aegean Sea.

The world's longest suspension bridges are listed according to the length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges, often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. If one bridge has a longer span than another, it does not necessarily mean that the bridge is longer from shore to shore (or from abutment to abutment).

Suspension bridges have the longest spans of any type of bridge. Cable-stayed bridges, the next longest design, are practical for spans up to just over one kilometre (the longest cable-stayed bridge in the world has a 1,104 m span). Therefore, as of October 2025, the 28 longest bridges on this list are the 28 longest spans of all types of vehicular bridges (other than floating pontoon bridges).

The Akashi Kaikyo Bridge (Japanese: 明石海峡大橋, Hepburn: Akashi Kaikyō Ōhashi) is a suspension bridge that links the city of Kobe on the Japanese island of Honshu and Iwaya, Awaji [ja] on Awaji Island. It is part of the Kobe-Awaji-Naruto Expressway, and crosses the busy and turbulent Akashi Strait (Akashi Kaikyō in Japanese). It was completed in 1998, and at the time, was the longest central span of any suspension bridge in the world, at 1,991 metres (6,532 ft). Currently, it is the second-longest, behind the 1915 Çanakkale Bridge in Turkey that was opened in March 2022.

The Akashi Kaikyo Bridge is one of the key links of the Honshū–Shikoku Bridge Project, which created three routes across the Seto Inland Sea.

Otoyol 6 (English: Motorway 6), named the Kınalı-Balıkesir Motorway (Turkish: Kınalı-Balıkesir Otoyolu) and abbreviated as O-6, is a planned 321-kilometre-long (199 mi) toll motorway in Turkey, with an 82 km (51 mi) section between Malkara and Lapseki open to traffic. When complete, the route will begin at Kınalı, travel south to Çanakkale, cross the Dardanelles via the 1915 Çanakkale Bridge, and terminate at Balıkesir; connecting western Anatolia with East Thrace. The route is the first motorway in Turkey outside of Istanbul to connect the European and the Asian parts of the country.