高速公路的建成沟通了沿线地区与大城市、交通枢纽、工业中心的联系,改善了投资环境,增强了对中外投资者的吸引力。沈大高速公路通车后,沿线5个城市外商投资意向增强,实际利用外资规模不断扩大,建立各类经济开发区80多个。在京津塘高速公路天津段,已形成武清、逸仙园、宜兴埠、塘 The completion of the expressway communicated with the major cities, transport hubs and industrial centers in the areas along the route to improve the investment environment and enhance the attractiveness of Chinese and foreign investors. After the Shenyang-Dalian Expressway opened to traffic, the intention of foreign investment in 5 cities along the route increased. The actual utilized foreign capital was continuously expanding, and more than 80 various types of economic development zones were established. Tianjin-Beijing-Tianjin-Tanggu Expressway has been formed in Wuqing, Yi Sin Park, Yixing Port, Tong