When will the 309 National Road from Dingyuan to Dachuan be rebuilt and expanded?
Unknown. According to the planning of 20 18 highway network, the Dingyuan-Dachuan section of 309 national highway has been included in the upgrading project, and the first phase of the project is scheduled to be completed before 20021. As of May 17, 2023, the specific construction time and progress have not been announced, so it is necessary to pay attention to the notices and announcements of relevant departments.