Core Points - The Xi'an to Xingping Expressway expansion project has successfully completed the key construction of the Weihe Grand Bridge, marking the final phase of the project [2] - The total length of the Xi'an to Xingping Expressway expansion is 24.382 kilometers, designed for a speed of 120 kilometers per hour, and it connects with G30 Lianhuo Expressway and G3021 Linxing Expressway [2] - Prior to the expansion, the traffic volume on the expressway exceeded 55,000 vehicles per day, accounting for 67.8% of the traffic on the Lianhuo Expressway, with the busiest segment exceeding 80,000 vehicles per day [2] Construction Techniques - The newly constructed right side of the Weihe Grand Bridge features a length of 1,085 meters, utilizing a combination of precast box beams, corrugated steel web continuous beams, and steel-concrete composite beams [2] - The construction team employed "four new" technologies to significantly enhance construction efficiency, including an automated monitoring system for deep-water foundation steel cofferdams [2] - An innovative "increased beam method" was used to reinforce the upper structure of the old bridge, significantly improving the load-bearing capacity of the beams [2] Economic Impact - Upon completion, the Xi'an to Xingping Expressway expansion will effectively improve regional transportation conditions and enhance Xi'an's role as a national central city, promoting accelerated economic development in the surrounding areas [2]