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随着西部大开发战略的深入实施,我国高速公路的建设实现了前所未有的跨越式发展。列入“十五”国家重点建设项目的西安至汉中高速公路是国道主干线GZ40在陕西境内的重要路段,是陕西省确立的三大标志性工程之一。其中户县至洋县段横穿秦岭,全长147公里。沿线地形、地貌、地质条件异常复杂。部分路段处于人迹罕见的原始森林,森林覆盖率达80%以上,植物种类达2000多种,属国家重点保护的珍稀濒危植物有20余种,珍稀动物160多种。
With the in-depth implementation of the strategy of developing the west, the construction of the expressway in our country has achieved unprecedented leaps and bounds. The Xi’an-Hanzhong Expressway, a national key construction project included in the “10th Five-Year Plan”, is an important section of the GZ40 national highway in Shaanxi Province and one of the three landmark projects established in Shaanxi Province. Among them, Huxian to Yangxian section crosses Qinling, a total length of 147 kilometers. Along the terrain, topography, geological conditions exceptionally complex. Some of the sections are in rare and virgin forest with over 80% of forest coverage and more than 2,000 species of plants. There are over 20 species of rare and endangered plants under state protection and more than 160 kinds of rare animals.