Beijing Grand Bridge, Railway bridge in Beijing, China.

Beijing Grand Bridge (北京特大桥) is a 48.15-kilometer railway viaduct on the Beijing–Shanghai High-Speed Railway. It begins about seven kilometers south of Beijing South Station in Fengtai District, south of the 4th Ring Road, crosses Daxing District and ends in Langfang, Hebei, just before the station. The beam bridge is built from precast concrete segments, except where it crosses the Jingkai Expressway (G45/G106) on a 108-meter steel box-girder arch span.

The viaduct was built from prefabricated concrete girders, which allowed faster progress than a conventional embankment: once the piers stood, girders made in factories along the line were carried to the bridge end and lifted onto the piers by a special machine. The Jingkai Expressway crossing (G45/G106) was built as a steel box-girder arch with a 108 m span, erected by cantilever construction over six motorway lanes and two side roads.

The bridge reflects China's commitment to modern transportation and connects previously distant parts of the city more closely, making regional travel more accessible to ordinary residents. It has become part of the daily landscape that millions pass through without necessarily thinking about how it changed their city.

The viaduct begins about seven kilometres south of Beijing South railway station in Fengtai District, just south of the 4th Ring Road, crosses Daxing District and ends in Langfang, Hebei, shortly before Langfang station. Riding the Beijing–Shanghai high-speed line over it takes roughly 20 minutes at normal operating speed, so a seat on the left or right gives a long look at the concrete spans.

The deck is built from precast concrete segments, except where it crosses the Jingkai Expressway (G45/G106): there a steel box-girder arch spans 108 metres over six motorway lanes and two side roads. Precasting let girders be made in factories along the line and lifted into place, speeding construction.