Please be careful about how to mark a bridge. There must be two nodes(节点) on two sides to separate(分割) the line if you want to make a bridge, or the whole routh will be a LONG bridge.
Also be careful about how road intersections are made. When two lines across, a node must be use to connect them together. They shouldn't directly overlap.
You can recheck the amended version of G316 to learn how to make bridge or intersections~

As a local I am sorry to tell you that the two river-crossing overhead cables in the north of the Ancient Xiangyang City have been removed on May 14th, 2020 due to the ancient city protection and development project. And overhead cables in ancient city were also took down in June 2021 for underground reconstruction. The powerplant near Han river was shut down forever for environment conservation on September 20th, 2021. :-)