35 years ago today, on August 20, 1990 (July 1, 1990 in the lunar calendar), China's first expressway "Shen Da Expressway" was officially completed and opened to traffic. On August 20, 1990, China's first expressway Shen Da Expressway was officially completed and opened to traffic. Shen Da Expressway is the first expressway to be opened to traffic in mainland China and the first eight-lane expressway in mainland China. It has a total length of 348 kilometers. When it was completed in 1990, it was all four-lane, fully interchange and fully interconnected. Widening and transformation began in 2002 and was completed in 2004. It was an eight-lane expressway with a design speed of 120 kilometers per hour. Construction started on June 27, 1984. According to the approval of the State Planning Commission, a first-class highway was built at both ends of Shenyang and Dalian, and a second-class highway was maintained in the middle section. In February 1986, the State Planning Commission approved the design task book for the reconstruction and expansion of the middle section into a first-class highway. So far, the project formalities for the construction of first-class highways along the whole line have been completed. In September 1987, the Liaoning Provincial Planning and Economic Commission, with the consent of the State Planning Commission, approved the feasibility study report and plan task book for the construction of automobile-specific highways at the two ends of Shenyang and Dalian. In October 1988, in addition to the completion of the 108-kilometer first-class highway in the middle section, Shenyang-Anshan, Dalian Houyan-Thirty Mile Fort North and South A total of 131 kilometers of fully interchange, fully enclosed, and fully controlled entrance and exit toll highways have been built on Shenyang-Anshan, Dalian Houyan-Thirty Mile Fort. On August 20, 1990, after more than 6 years of hard work, the entire line of Shen-Da Expres On May 28, 2002, the reconstruction and expansion of the Shenda Expressway officially began. On August 29, 2004, the reconstruction and expansion project of the Shenda Expressway was completed, and the whole section was eight lanes. The designed driving speed is 120 km/h, and the day and night traffic capacity can reach 130,000-150,000 vehicles. Comments: Back then, the common people did not know what the expressway was, but someone drove the ox cart to it... Now, the expressway has spread all over the country in many places!