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随着我国交通事业的不断发展 ,公路建设也发展较快。就河北省来说 ,到目前全省公路通车里程达到 6 0 0 0 0多 km,高速公路 1 6 0 0多 km,国省主线公路 1 70 0 0多 km,普通公路 41 40 0 0多 km。新建的公路桥梁标准 :高速公路按汽车—超 2 0级 ,挂车— 1 2 0设计。一级公路以下
With the continuous development of China’s transport industry, highway construction has also developed rapidly. As far as Hebei Province is concerned, up to now, more than 60,000 km of highway have been opened to traffic in the province, more than 1,600 km of expressways, more than 1,700 km of major national highways and 41,400 km of ordinary roads . The new highway bridge standards: highway by car - super 20, trailer - 120 design. Below the level of the road