Kaiyuan Changhong Bridge, Arch bridge in Lebaidao Subdistrict, China

Kaiyuan Changhong Bridge is a single-span open-spandrel stone arch bridge crossing the Nanpan River in an east-west direction. It is 171 meters long, 30 meters high, and 8.5 meters wide, with a main span of 113 meters and five subsidiary arches on each side. The stone balustrades bear inscriptions: on the west end, "高山低头、河水让路" (mountains bow, rivers give way); on the east end, "繁荣经济、造福人民" (prosper the economy, benefit the people).

The first bridge at this site was a suspension bridge built in 1898 by merchant Wang Chi, destroyed by bandits in 1927. A steel-cable bridge followed in 1944 for military supplies, blown up in 1949 and repaired the next year. The stone arch bridge was begun in March 1960; its arch collapsed in a storm on 25 September 1960, killing 18 workers, and it opened in September 1961. It became a national protected site in 2019.

The name Changhong, "long rainbow", comes from the workers' slogan "overcome the difficulty, offer a long rainbow" and from the arch's shape over the river. The stone balustrades carry period inscriptions: "mountains bow, rivers make way" at the west end and "prosper the economy, benefit the people" at the east end.

The bridge accommodates vehicles and cyclists while linking both riverbanks and nearby recreational areas. Regular maintenance keeps the structure in good working condition for daily use.

The stone balustrade carries slogans carved at each end: "Make the mountains bow and the river give way" on the west, "Prosper the economy, benefit the people" on the east. Bridge expert Mao Yisheng called it the world's longest single-arch stone bridge of its day.