Shōwa Bridge, Road bridge in Meiwa-Hanyu, Japan

Shōwa Bridge crosses the Tone River and links Meiwa in Gunma Prefecture with Hanyu in Saitama Prefecture. The structure uses a steel arch design and carries Japan National Route 122 along with several prefectural roads.

A wooden bridge opened here on 28 December 1929, 574.5 m long and 4.5 m wide. In 1945 its central section was washed away and replaced by four Warren truss spans. The 1962 replacement was a Langer bridge 658.3 m long with seven arches painted in the seven rainbow colours; its old span was reused for the Kuriyase Bridge over the Arakawa in Minano. The current steel plate girder bridge opened provisionally on 25 March 2006 and was completed with a second carriageway on 20 December 2014, at a total cost of about 14.3 billion yen.

The bridge carries National Route 122 between the Kawamata intersection in Meiwa and the Shōwa Bridge intersection in Hanyu, next to the Michi-no-Eki Hanyu roadside station. Downstream of the bridge, no ordinary road crosses the Tone for about 14 km, as far as Saitama Bridge. Since 1998, Hanyu, Tatebayashi, Sano, Itakura and Meiwa have campaigned together for another crossing.

The bridge is easily accessible and serves as a main traffic route for vehicles and pedestrians between the two prefectures. Visitors can cross it during daylight hours and view the river from various points along the structure.

Downstream of Shōwa Bridge, no ordinary road bridge crosses the Tone River for about 14 km until Saitama Bridge. Since 1998, Hanyu, Tatebayashi, Sano, Itakura and Meiwa have campaigned through a cross-border council for a new bridge. On 28 November 2014, a viewing event let visitors inspect the bridge under construction.