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京珠国道主干线粤境高速公路,即广韶高速公路是国内首次进行中间扩建的项目。该路段按双向六车道规划,路基、桥涵及隧道工程已按六车道建成;路面工程按双向四车道标准建设,中间预留两个扩建车道;预留带内建成的路基上铺有防水土工布并回填了耕植土,建有排水系统及植有草树。本工程在不中断现有交通的条件下将路面扩建成为双向六车道。
The main artery of the Beijing-Zhuhai National Highway, Guangdong Expressway, is Guangshao Expressway, the first expansion project in China. The road section is planned according to bi-directional six-lane. Subgrade, bridge and culvert and tunnel project have been completed according to six lanes. Pavement construction is based on two-way four-lane standard with two expansion lanes reserved. Reserved geotextile And backfilled arable land, built drainage system and planted grass trees. The project will be expanded to a two-way six-lane road without interrupting existing traffic conditions.