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昌平至八达岭公路是久已闻名的游览路,也是北京通往内蒙的干线,由于路的标准较低,对迅速增长的客、货运输和旅游交通很不适应,迫切需要进行技术改造。在上级领导的关怀下,根据客观情况决定先修建一条新路,新路通车后,再对旧路进行改造。新路位于老路以东的一条沟谷里,起自
The Changping-Badaling Highway is a long-established tourist route and Beijing’s main route to Inner Mongolia. Due to its low standards, it is not suitable for the rapid growth of passenger, cargo and tourist traffic and there is an urgent need for technological transformation. Under the care of the superiors, we decided to construct a new road according to the objective situation. After the new road opened to traffic, the old road would be rebuilt. The new road is located in a valley east of the old road, from