达陕高速公路是四川省规划的高速公路网中的一条主要通道，是国家规划的西部大开发战略中的八条高速公路建设项目之一，由达州市罗江起程，途径宣汉，铁矿，官渡，梨树穿大巴隧道进入陕西境内，全长143.244公里。工程于2007年12月25日开工建设，2012月4月12日建成通车。公司承建该项目D20标段路面工程。

Dashan Expressway is a main channel of the expressway network planned by Sichuan Province and one of eight expressway construction projects in the west development strategy planned by the state, which starts from Luojiang, Dazhou City, passes through Xuanhan, Tiekuang, Guandu and Lishu and enters Shaanxi via Daba tunnel, with an overall length of 143.244km. The project was commenced on December 25, 2007 and completed and open to traffic on April 12, 2012. The company contracted to building pavement engineering for Bidding Section D 20 of the project.