Recently, according to Sichuan Zhenguang Expressway Co., Ltd., following the successful breakthrough of the right tube of Wensheng Tunnel on March 2, the left tube of the tunnel was successfully bored through on April 1. This marks it as the first tunnel on the entire Zhenguang Expressway to be fully bored through on both tubes.

　　It is reported that before the tunnel was fully bored through on both tubes, the right tube of Qinjialing Tunnel in the Wangtong section of the Zhenguang Expressway was successfully bored through on March 31. According to the construction plan, all tunnels in the Wangtong section of the Zhenguang Expressway will be bored through before the end of May. Next, while fully advancing production, the project construction party will apply unmanned paving and drone-swarm rolling technologies in the construction of the expressway's asphalt pavement, accelerating the building of a smart expressway.