在旧公路上,以前修建的桥梁有些是宽度仅3.65～3.80米的窄桥,有些是石台木面桥,个别则因解放前不搞水文调查常被洪水淹没等。在对原有公路进行技术改造中,这些不符合要求的桥梁需要加宽、加高和改为永久式,对原桥结构物,我们都想方设法加以利用。百色至凌云公路有一座桥原是三孔,每 On the old road, some of the previously constructed bridges are narrow bridges of only 3.65-3.80 meters in width, some are Shitai Mufangqiao, and some are often inundated by floods when hydrological investigations are not conducted before the liberation. In the technical transformation of the original highway, these non-conforming bridges need to be widened, raised and changed to permanent type, and the original bridge structure, we all find ways to make use of it. Bayside to Lingyun Road, a bridge is three holes, each