Ikeda Hesokko Bridge, Modern bridge at Lake Ikeda, Japan

The Ikeda Hesokko Bridge is a 705 m long, 10.4 m wide arch bridge over the Yoshino River (Lake Ikeda), the Dosan Line and National Routes 32 and 192, linking Itano and Shiroji in Ikeda, Miyoshi, Tokushima. It carries the Tokushima Expressway and has a maximum span of 200 m, the longest for a concrete inverted Langer arch bridge in Japan.

The bridge opened on 11 March 2000 as a key link of the Expressway network, carrying the Tokushima Expressway of NEXCO West Japan over the Yoshino River, the Dosan Line and National Routes 32 and 192. Its name was chosen by public competition and announced on 15 August 1999 during a walking event held before opening; the provisional name had been Ikeda Lake Bridge. It won the 1999 JSCE Tanaka Prize and the 2002 JSCE Design Award, excellence prize.

The name was chosen by public competition; before the official announcement, the bridge was provisionally called Ikeda Lake Bridge. The name was revealed on 15 August 1999 during a walking event held before the bridge opened, and the bridge has become a landmark of Ikeda, known as the navel of Shikoku.

The bridge carries the Tokushima Expressway over the Yoshino River, the Dosan Line and National Routes 32 and 192, linking the Itano and Shiroji districts of Ikeda, Miyoshi. It has two provisional lanes and no pedestrian walkway, so it cannot be crossed on foot.

The bridge's 200 m main span is the longest of any concrete arch bridge of the inverted Langer type in Japan. Its arch was erected using a truss method with simultaneous cantilevering from both sides, a world first. The structure won the 1999 JSCE Tanaka Prize and a 2002 JSCE Design Award (excellent prize).