有沢橋, Road bridge over the Jinzū River in Toyama, Japan

Arisawa Bridge carries Toyama Prefectural Route 62 across the Jinzu River in Toyama. Its 457.4 m length is split into two parallel decks: the upstream carriageway is 6.0 m wide, while the downstream deck is 10.75 m wide and carries the only cycle and pedestrian path. The Warren steel truss replaced earlier wooden spans, and a wooden bridge abutment from 1918 survives on the upstream left bank.

The bridge was built after World War II as part of reconstruction efforts. It became important for connecting communities and supporting industrial development in Toyama Prefecture.

The name Arisawa comes from Arisawa no watashi, the ferry that crossed the Jinzū River here from the Sengoku period until the first wooden bridge replaced it in 1892. The bridge carries Toyama Prefectural Route 62 and about 39,000 vehicles a day, the third-highest traffic volume among bridges over the Jinzū. On the upstream left-bank embankment, the abutment of the 1918 wooden bridge still stands. The bridge also gives its title to a 2021 book by Jingū Akemi.

The bridge carries Toyama Prefectural Route 62 (Toyama-Kosugi Line) over the Jinzu River, linking central Toyama with the western districts and Imizu. Its two carriageways were finished at different times: the upstream side is 6.0 m wide, the downstream side 10.75 m, and the only cycle and pedestrian path, 3.25 m wide, runs along the downstream side.

On the upstream left bank levee, the abutment of the wooden bridge built in 1918 (Taishō 7) still remains, a detail most drivers crossing the current span never notice.