Osmangazi Bridge, Suspension bridge in Dilovası, Turkey
The Osmangazi Bridge extends 2,682 meters across the Gulf of İzmit with a main span of 1,550 meters and towers standing 252 meters high.
The bridge was officially opened on June 30, 2016, after construction that began in March 2013 by a Turkish consortium including Nurol and Makyol.
The structure represents Turkey's modern engineering achievements and serves as a symbol of technological progress connecting Europe and Asia via the Marmara region.
The bridge operates as a toll road on the O-5 motorway with six traffic lanes and reduces travel time between Istanbul and İzmir by approximately one hour.
Turkish motorcycle champion Kenan Sofuoğlu rode across the bridge before its opening, reaching a record speed of 400 kilometers per hour on his Kawasaki motorcycle.
Location: Dilovası
Inception: July 1, 2016
Architects: Dissing+Weitling
Official opening: June 30, 2016
Height: 234.425 m
Length: 2,682 m
Longest Span: 1,550 m
Width: 35.93 m
Reference: O-5
Operator: Otoyol A.Ş
Address: Marmara Denizi, 10000 Marmara/Balıkesir, Türkiye 10000
GPS coordinates: 40.75500,29.51670
Latest update: November 24, 2025 15:41
This collection gathers bridges that hold world records for span length, defined as the distance between two main pylons. While the longest bridge in the world measures 165 kilometers in China, this refers to the maximum span covered in one continuous structure. These constructions demonstrate engineering achievements in crossing maritime straits, rivers, or valleys without intermediate supports. The Çanakkale Bridge in Turkey crosses the Dardanelles Strait with a span of 2,023 meters, setting the current record for suspension bridges. In Japan, the Akashi Strait Bridge connects Kobe to Awaji Island with a central span of 1,991 meters. In China, several bridges exceed 1,600 meters in span, such as the Yangsigang Bridge over the Yangtze in Wuhan or the Xihoumen Bridge in the Zhoushan Archipelago. South Korea with the Yi Sun-sin Bridge, Denmark with the Great Belt Bridge, and Turkey with the Osman Gazi Bridge complete this list of remarkable structures. These bridges are interesting destinations for observing modern civil engineering accomplishments. They connect cities and regions, significantly reducing travel times while offering scenic views of the landscapes they cross. Visiting them allows appreciation of the scope of work involved in constructing these infrastructures under often challenging conditions.
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