近年来社会主义经济的迅速繁荣,不仅仅使得高速公路取得了巨大发展,同时也使得高速公路的运输压力相应上升,原有高速公路迫切需要改扩建从而满足迅速增大的交通需求。本文结合宁通高速江广段(江苏省南京-南通)扩建工程中所面临的主要难点进行了分析,并对相应的施工对策进行了探讨,以为高速公路改扩建工程实践提供经验。 In recent years, the rapid economic prosperity of the socialist economy has not only made great achievements in the development of the expressway, but has also resulted in a corresponding increase in the transportation pressure of the expressway. The original expressway urgently needs to be expanded and expanded so as to meet the rapidly increasing traffic demand. This paper analyzes the main difficulties in the expansion project of Nanjing-Nantong Expressway (Nanjing-Nantong, Jiangsu Province) and discusses the corresponding construction measures to provide experience for the reconstruction and extension project of expressway.