Suigō Ōhashi Bridge, Road bridge over the Tone River between Katori, Chiba and Inashiki, Ibaraki, Japan.

Suigō Ōhashi Bridge is a cable-stayed road bridge over the Tone River, linking Katori in Chiba Prefecture with Inashiki in Ibaraki Prefecture. It carries National Routes 51, 125 and 355 on a 535.25 m deck 25.5 m wide, with a longest span of 178.9 m. Its two steel pylons form a harp pattern, and the pylons stand on the prefectural border.

A 1924 campaign by residents of former Sawara town led to the first Suigō Ōhashi, built from February 1934 to March 1936 about 300 m downstream of today's bridge. It was the only bridge over the lower Tone River at the time. The current cable-stayed bridge opened in March 1977 after work began in October 1973.

The first bridge, a truss design with two towers, was likened to nearby Mount Tsukuba and became a local landmark. When it was replaced, residents' attachment to its shape led planners to choose a cable-stayed design for the second bridge, opened in 1977. Its main tower stands on the Chiba–Ibaraki prefectural border.

The bridge carries National Routes 51, 125 and 355 over the Tone River between Katori, Chiba and Inashiki, Ibaraki. Its deck is 25.5 m wide, with two 2.5 m walkways, so crossing on foot is possible. The main tower of the cable-stayed span stands on the prefectural boundary. The bridge length of 535.25 m covers only the river; with the approach spans the crossing is close to 1 km.

The main tower of the cable-stayed span stands exactly on the Chiba–Ibaraki prefectural border, so the bridge's two halves belong to different prefectures. The first bridge, finished in 1936, stood about 300 m downstream and was a truss bridge with two towers that residents likened to nearby Mount Tsukuba.