蔵王橋, Suspension bridge in Aridagawa, Japan

Zao Bridge is a suspension bridge about 160 meters long over the Futakawa Dam on the Arida River in Aridagawa, Wakayama Prefecture. Its bright red paint stands out against the surrounding coniferous forest. The deck is built of grid-like steel framing, so the dam lake is visible directly below.

Originally built to carry vehicle traffic, the bridge was later converted exclusively for pedestrians. This change transformed it into a popular walking destination through the natural surroundings.

The bridge takes its name from the nearby Mount Zao, though the source does not explain the link. In spring the cherry trees around the bridge come into full bloom, and the red span stands out against the conifer-covered slopes. Walkers cross on foot and can continue along the lakeside path on the left bank of the Futakawa Dam, laid out as a promenade.

The bridge is for pedestrians only, and its steel grid deck lets you see the dam lake directly below, so those uneasy with heights often turn back partway. A lakeside path on the left bank of Futakawa Dam, reached after crossing, is maintained as a walking trail. The surrounding conifers make the red span stand out.

The bridge floor is made with a steel grate design that lets you see the water directly below as you walk. This open construction creates an unusual sensation while crossing.