我国高速公路近年来交通流量迅速增加，大多数已简称使用的高速公路已经不能满足经济发展所带来的增长需求。这些高速公路都需要进行一定的改建加宽。老高速公路的改建加宽工程已经成为了我国公路建设中的重要问题之一。本文对高速公路路基加宽工程进行了一定的简述，并对其处治技术经济进行了一定的比选分析。% Our highway traffic flow has increased rapidly in recent years, most used expressway has been unable to meet the growth in demand brought by economic development. The expressway needs some alteration. The old expressway widening reconstruction has become one of the important problems of highway construction in China. This paper makes brief introduction of expressway roadbed widening project, and makes comparison analysis on the treatment technology economy.
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