The Yongjiang River Bridge is a unique steel and concrete bridge with a main span of 468m. It uses a mix of materials to ensure strength and stability. The bridge has concrete box girders for most sections, with a steel box girder in the central span. The pylons are tall diamond-shaped structures with steel anchor boxes. The bridge's foundations are supported by large piles. The design focused on handling heavy railway loads and ensuring safety during earthquakes and strong winds. The bridge was carefully analyzed for structural integrity and comfort for travelers.