The majestic Xining Yuanshu Interchange is the largest overpass in Qinghai Province and even in Northwest China. It is located on the west side of Shangri-La Road in Xining City. The main line bridge is 1.29 kilometers long from east to west, 0.7 kilometers long from north to south, and 29 meters in height. Construction started on April 30, 2016.

This is a five-story and five-way X-shaped interchange, with 12 ramps in the 4 directions respectively, which are responsible for traffic conversion between different directions.

Through this interchange, vehicles can enter the old and new West Tower Expressway, the Beijing-Tibet Expressway, the South Ring Expressway, and the Phoenix Mountain Highway which was under construction. The completion of this bridge will greatly improve the main skeleton of Xining's traffic expressway network.

Trunk Road

The main road of Phoenix Mountain Expressway is located at the highest level of the interchange with a wide view. The width of the roadway on both sides is 12m-12.5m, and the designed speed of each lane is 80Km/h.

Therefore, the functional lighting of main road of Phoenix Mountain Expressway was realized by the single-sided or double-sided arrangement of the 12m high pole streetlights, with decorative landscape lighting.

Ramps

The functional lighting of the ramp is realized by LiteMagic’s low-level lighting system-guardrail luminaires. As mentioned above, the Yuanshu Interchange is a five-story, five-way X-shaped large-scale interchange. The main roads and ramps are crisscrossed between each other. High pole streetlights, if were applied, would hinder the driver's sight and cause unsafety for driving.The public space around the overpass would also be cumbersome due to the dense street light poles. Moreover, a large number of high poles would result in high initial installation cost and subsequent maintenance cost.

Guardrail lights solve the above problems well. More than 9,200 sets of R2301 guardrail lights customized by "LiteMagic" were used for the functional lighting for ramps of the overpass in the entire Yuanshu Interchange Overpass.