Core Points - The asphalt paving of the Heishanxia Yellow River Bridge on the G338 highway from Zhongwei to Mengjiawan has been completed, with the entire G338 line expected to open by the end of the year [1] - The G338 project has a total length of 15.45 kilometers, with an additional 2.011 kilometers for the Shapotou South Bank Peninsula connecting line [1] - The project has faced significant construction challenges due to its high elevation, numerous bridges, and narrow working areas, making it one of the more difficult and larger-scale ordinary national highway construction projects in recent years [1] Investment and Economic Impact - The total fixed asset investment for the G338 highway from Zhongwei to Mengjiawan has reached 830 million yuan, with an engineering completion rate of 98% [1] - The completion of the project is expected to enhance the traffic capacity of the G338 line, ensuring safe and efficient transportation in Ningxia, and promoting economic and social development in Zhongwei and the broader Ningxia region [1] Technological Innovations - The project utilized high-elasticity and high-viscosity modified asphalt concrete for the Heishanxia Yellow River Bridge, and colored snow-melting modified asphalt concrete for high-standard applications on specific road sections [1] - These technological advancements not only improve road performance but also successfully integrate road functionality with ecological environment, creating a transportation landscape that reflects regional characteristics [1]

中新网中卫9月11日电(记者于晶)9月11日，国道338线中卫至孟家湾段公路黑山峡黄河特大桥沥青铺设 完毕。至此，该国道全线的沥青全部铺设完毕，预计年底实现通车。 国道338项目主线全长15.45公里，沙坡头南岸半岛连接线工程全长2.011公里。起点顺接国道338线宁卫 段终点，途经中卫市常乐镇、迎水桥镇。先后跨越西气东输管道、明长城遗址及定武高速，经过黄河进 入沙坡头国家级自然保护区，终点于孟家湾村处接原338线。 据了解，由于国道338线中卫至孟家湾穿越香山北缘，线位高，桥多墩高，施工作业面狭窄，是近年来 施工难度、投资规模都较大的普通国道建设项目。此次沥青路面铺设最大的亮点是在黑山峡黄河特大桥 上应用了高弹高粘改性沥青混凝土，以及在沙坡头南岸半岛连接线的平交道口及纵坡超4%路段高标准 应用了彩色融雪改性沥青混凝土。这些技术的使用不仅提高路面性能，还成功实现道路功能与生态环境 的有机融合，打造了彰显区域特色的交通景观廊道。 截至目前，国道338线中卫至孟家湾段公路已累计完成固定资产投资8.3亿元，工程完成率达98%。工程 竣工后对提高国道338线通行能力、保障宁夏国道畅通安全便捷高效，促进中卫乃至宁夏经济 ...