Abstract: The Yangtze River is deep and torrential. Its upper reaches are often thickly deposited with sand and pebbles in the riverbed. The bedrocks are interbedded with soft sandstones and shales, which are Low in strength and easy of weathering. When a bridge is built over such a river, the foundation under water is our first concern. This paper describes the foundation design of the No. 2 pier of Luzhou-the Yangtze River Bridge. The foundation was constructed by making use of the cast-in-place method with the pile cap above ground. As a result of load-testings and observations after the bridge was completed in 1981, the design proved satisfactory.