August 5，The reconstruction project of Lucheng Guanling Tunnel of 330 National Highway, a provincial key traffic project, has been completed and opened to traffic.，Two months earlier than expected.。After opening to traffic，The traffic pressure of Laoguanling Tunnel from Yangyi Houjing to Tengqiao in Lucheng has been greatly alleviated.，At the same time, it will drive China Shoe Capital Industrial Park.、Development of Lucheng Light Industry Park and other important economic zones。

Laoguanling Tunnel is an important passageway connecting the western part of Lucheng and the urban area.，In recent years, the economy of Lucheng has developed rapidly.，Wenzhou Western Multimodal Transport Hub、Tengqiao New Area(Plan)Such projects will be built and put into production on a large scale in the west.，The traffic flow has increased dramatically，The original two-way two-lane second-class highway in the old tunnel is difficult to meet the increasing traffic demand.。October 2019，Lucheng starts construction of Lucheng Guanling Tunnel Reconstruction Project of 330 National Highway，New lane on the left side of Laoguanling Tunnel，The new and old tunnels are merged and upgraded to a two-way four-lane first-class highway.。It is reported that，Total length of the project 2.517 kilometers，Total investment 3.100 million yuan，Wherein the length of the tunnel portion is 1.14 kilometers，Design speed 80 kilometers per hour/Hour，It is equipped with a pedestrian passage、Non-motorized lane，Take into account municipal functions。

Project Manager Yu Shuangjian introduced.，After preliminary exploration，The project is close to Jinwen Railway.、Yueqing Bay Railway，High technical requirements for tunnel blasting construction。For this reason，Lucheng set up a special class for Lucheng Guanling Tunnel on 330 National Highway，Active joint expert group to provide technical and strength support at any time，Application of monitoring and measurement methods in construction technology，Accurately control the construction progress in the whole process，At the same time, according to the change of tunnel surrounding rock conditions,，Continuously optimize the blasting plan，Protect the existing lines to the maximum extent，Reduce the involvement of iron、Impact of road-related construction section。

During construction，Affected by the epidemic situation and continuous heavy rainfall，The progress of the project was once slowed down.。For this reason，The project is investing resources.、Strengthen overall planning in terms of staffing and process organization，Implement by day，Continue to maintain a state of hard work。“Construction peak period，More than 100 construction workers have been put into the project.，Adopt 24-hour non-stop operation，The purpose is to improve the travel conditions of the citizens in the West as soon as possible.。”Yu Shuangjian said。

According to Li Saifang, director of Lucheng Traffic Engineering Construction Center,，After the opening of the new tunnel，The completed National Highway 104 will be improved.、National Highway 330、Traffic efficiency of roads such as Yuteng Highway，Promote the optimization and upgrading of the road network structure in the west of Lucheng，Promoting regional connectivity in the western region，Enhance the radiation effect of urban areas on the western economic belt。