自从我省修建第一条高速公路——京石高速公路以后,高等级公路建设有了长足的发展,这不仅缓解了交通瓶颈制约问题,并且大大地促进了沿线各地的经济发展,获得了显著的经济效益和社会效益。但高等级公路带来的效益,是大量的投资所带来的,尤其是高速公路, Since the construction of the first freeway in our province, Beijing-Shijiazhuang Expressway, there has been a great development in the construction of high-grade highways. This has not only alleviated the traffic bottleneck problem but also greatly promoted the economic development in various places along the route and achieved remarkable results The economic and social benefits. However, the benefits brought by high-grade highways are brought by a large amount of investment, especially highways,