介绍了沪宁高速公路扩建工程中的老路病害调查方法并应用该方法对路面进行了病害调查,根据病害调查的结果对不同类型的病害分析了成因,针对不同的病害类型给出了相应的处理方法。实施结果表明,在沪宁高速公路扩建工程中的老路处理既合理地利用了原有旧路,也没有留下隐患,是扩建工程中合理利用老路的一种有效方法。 This paper introduced the investigation of old road disease in Shanghai-Nanjing expressway expansion project and carried out the disease survey on the road by this method. According to the results of the disease survey, the causes of different types of diseases were analyzed, and the corresponding treatment was given according to different disease types method. The implementation results show that the old road handling in the expansion project of Shanghai-Nanjing Expressway not only makes rational use of the original old road but also leaves no hidden danger, which is an effective way to rationally utilize the old road in the expansion project.