Toyosato Bridge, Cable-stayed and road bridge in Asahi-ku and Higashiyodogawa-ku, Japan
Toyosato Bridge is an A-shaped cable-stayed bridge over the Yodo River, linking Toyosato in Higashiyodogawa-ku with Taishibashi in Asahi-ku, Osaka. Its formal structure is a three-span continuous steel deck box-girder cable-stayed bridge, 561.4 m long and 19.5 m wide, with a main span of 216 m. It carries National Route 479, the Osaka Inner Loop Line.
The bridge was completed in 1970 and was part of Osaka's major post-war infrastructure expansion. During this period, Japan was investing heavily in transportation networks to support rapid economic growth.
The bridge is on the Naniwa Meikyo 50 selection, a list of notable Osaka bridges. Its name comes from the Toyosato district on the Higashiyodogawa side. Until March 1970 the Hirata ferry, in service for more than 290 years, crossed the Yodo River here; it closed when the bridge opened.
The bridge is open daily for vehicle traffic between the two districts and supports regional transportation flow. Pedestrians and cyclists can also use the structure to cross between the areas on either side.
The bridge's 216 m main span was Japan's longest cable-stayed span when it opened in 1970, until the 250 m Suehiro Bridge in Tokushima surpassed it in 1975. It was Osaka's first full-scale cable-stayed bridge, built for 2.68 billion yen as part of Expo '70 related roads.
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