ABSTRACT
The multi-storey Yuen Long Town development in Hong Kong is separated by a live Light Rail Track. To connect the two sides of the development, a footbridge and vehicular bridge has been constructed using a novel construction method. The footbridge is a 45m long fully enclosed steel warren truss bridge located at a lower level and the vehicular bridge is a 50m long steel concrete composite bridge located at the top of the podium.The erection of each bridge took 3 days. The footbridge was assembled on top of the adjoining podium of the development. It was then connected to a turntable constructed at the edge of the podium, and temporarily made into a cantilever cable stay bridge with 4 cables attached to a tower on top of the turntable. In an overnight rail possession, the bridge was rotated 120 degrees over the railway. Cables were removed and the bridge was lowered vertically by strand jacks to the correct level over the next two nights with rail possessions. The turntable was then rotated back to the original location and the process repeated for the vehicular bridge.The paper will describe the temporary works that were designed and executed for this novel construction method and the erection process.
