随着改革开放的深入进行,交通运输不能适应工农业生产的发展的情况,已引起各级政府的充分重视。因此,增加投入,加快交通基础设施建设的步伐己成为十分迫切的任务。但由于交通工程建设具有投资大、建设工期长、社会效益强、投资较难回收等特点。加之目前国家财力不足,因此只能实 With the deepening of the reform and opening up, the fact that transportation can not meet the development of industrial and agricultural production has drawn full attention from all levels of government. Therefore, it has become a very urgent task to increase investment and speed up the construction of transport infrastructure. However, due to traffic engineering construction with large investment, long construction period, strong social benefits, investment is more difficult to recover and so on. Coupled with the current lack of financial resources, it can only be real