The Amarube Viaduct (Amarube Kyōryō) is a railway bridge in the town of Kami, Mikata District, Hyōgo Prefecture, on JR West's San'in Main Line between the stations of Yoroi and Amarube. Work began on the bridge in December 1909, and it opened for service March 1, 1912. It is 310.59 meters in length and 41.45 meters tall. Construction cost a total of 331,535 yen. It had 11 vertical supports and 23 sections of girders.
National Route 178 passes beneath it. The structure's unique design and bright color made it popular not only with rail fans but tourists as well. The closest station is Amarube Station, and the mountain behind it provides a popular point from which photographers take pictures of the bridge. From March 6, 2008, the bridge was closed periodically for the construction of its replacement.