Can I stop for sightseeing at Shijiuhu Bridge?

You can't. Official website, Nanjing Cultural Tourism Bureau, inquired that Shijiuhu Bridge is a cross-lake passage connecting Lishui District and Gaochun District of Nanjing. Located on Shijiu Lake, parking is not allowed in the whole area of the bridge. If you want to see the Shijiuhu Bridge, you must stop at Gaochun on Tuangu Line, or you can turn right across the street and park online.