长沙北横高速进行特许经营者公开招标，为2025年省重点建设项目

Group 1 - The G9907 Liuyang Shashi to Ningxiang Expressway (Changsha North Horizontal Expressway) has entered the public bidding phase, indicating significant progress in the project [1] - The project is part of the 2025 key construction projects in Hunan Province, with an estimated total investment of approximately 21.312 billion yuan [1] - The expressway will span approximately 92.62 kilometers, featuring a design speed of 120 km/h and a bridge-tunnel ratio of 51% [1] Group 2 - The G9907 expressway is included in the national highway network plan, connecting key cities in the Chang-Zhu-Tan urban agglomeration [2] - The completion of the G9907 expressway is expected to alleviate traffic pressure on the G5513 Chang-Zhang Expressway and promote industrial collaboration among Changsha, Zhuzhou, Xiangtan, and Yiyang [2] - The expressway will enhance the "one-hour commuting circle" road network structure in the Chang-Zhu-Tan urban area [2]