達陜高速公路是四川省規劃的高速公路網中的一條主要通道，是國家規劃的西部大開發戰略中的八條高速公路建設項目之一，由達州市羅江起程，途徑宣漢，鐵礦，官渡，梨樹穿大巴隧道進入陜西境內，全長143.244公里。工程于2007年12月25日開工建設，2012月4月12日建成通車。公司承建該項目D20標段路面工程。

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.