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绥化至庆安公路采取单侧加宽,保留旧路,分期修建的设计方案。这是目前公路交通量水平低,又要适应长远发展情况而提高公路等级的一种有效方法。
Suihua to Qing’an highway to take unilateral widening, retaining the old road, installments designed to build. This is an effective way to improve the grade of the highway at present because of the low level of road traffic and the long-term development.