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据有关材料记载,我国现有国道70条,总长11.6万多千米。这70条国道根据其地理走向分为三类。第一类是以北京为中心,作扇面辐射的公路,共12条,约1.4万千米;第二类是中国版图之内南北走向的公路,共28条,约3.9万多千米;第三类是东西走向的公路共30条,约5.3万多千米。
According to the relevant materials, there are 70 State Roads in our country with a total length of over 116,000 km. The 70 National Roads are divided into three categories based on their geographical orientation. The first type is Beijing-centered road radiating sectorial fan, a total of 12, about 14,000 km; the second category is within the territory of China north-south road, a total of 28, about 39,000 km; the third Class is the east-west road a total of 30, about 53,000 kilometers.